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Electromagnetic waves The concept that could explain this phenomenon is the concept of electromagnetic waves. And, the concept of electromagnetic waves was very knowledgeable not only associated with TV or cell phone only, but many other applications that can often be found daily around us. Applications include microwave, radio, radar, or x-rays. As we discussed earlier that there are two basic laws that connects electricity and magnetism symptoms. First, electric currents can produce (induced) magnetic field. This phenomenon is known as magnetic induction. The foundation stone of this concept is that Oersted had discovered this phenomenon experimentally and formulated in full by Ampere.Symptoms of magnetic induction is known as Ampere's Law.
Michael Faraday, the discoverer of electromagnetic induction Second, the magnetic field changing with time to produce (induce) electric fields in the form of electrical current. This phenomenon is known as electromagnetic induction phenomenon. The concept of electromagnetic induction discovered in experiments by Michael Faraday and formulated in full by Joseph Henry. Electromagnetic induction law itself became known as the Faraday-Henry Law. From these two basic principles of electrical magnets above and taking into account the prevailing concept of symmetry in the laws of nature, James Clerk Maxwell submitted a proposal. Maxwell put forward proposals, namely that if the magnetic field varies with time can produce an electric field then the opposite may occur.Thus Maxwell proposes that the electric field varies with time to produce (induced) magnetic field. Maxwell's proposal was later to become the third law that links between electricity and magnetism.
Michael Faraday, the discoverer of electromagnetic induction Second, the magnetic field changing with time to produce (induce) electric fields in the form of electrical current. This phenomenon is known as electromagnetic induction phenomenon. The concept of electromagnetic induction discovered in experiments by Michael Faraday and formulated in full by Joseph Henry. Electromagnetic induction law itself became known as the Faraday-Henry Law. From these two basic principles of electrical magnets above and taking into account the prevailing concept of symmetry in the laws of nature, James Clerk Maxwell submitted a proposal. Maxwell put forward proposals, namely that if the magnetic field varies with time can produce an electric field then the opposite may occur.Thus Maxwell proposes that the electric field varies with time to produce (induced) magnetic field. Maxwell's proposal was later to become the third law that links between electricity and magnetism.
James Clerk Maxwell foundation stone of the theory of electromagnetic waves So the third principle is the electric field changing with time can generate a magnetic field. The third principle is that put forward by Maxwell is a development from the formulation of Ampere's law.Therefore, this principle is known as the Ampere-Maxwell Law. Of the three basic principles of electricity and magnetism at the top, Maxwell saw the existence of a basic pattern. Magnetic field varies with time can generate electric fields that also vary with time, and the electric field varies with time can also generate magnetic fields. If this process is continuous it will produce a magnetic field and electric field continuously. If the magnetic field and electric field are simultaneously propagate (spread) in all directions in space then this is a wave phenomenon. Such waves are called electromagnetic waves because it consists of electric and magnetic fields that propagate in space. At first, still in the form of electromagnetic waves from Maxwell's prediction that by intuition able to see a basic pattern in electricity and magnetism, as already discussed above. This fact makes the JC Maxwell considered the inventor and formulator of the basics of electromagnetic waves.
The theory of electric and magnetic Maxwell predicted the existence of wave elektromgnetik Maxwell's prediction of electromagnetic waves were really proven.Is Heinrich Hertz who proved the existence of electromagnetic waves through his experiments. Hertz experiment itself in the form of electromagnetic wave generation from an electric dipole (two poles are electrically charged with opposite charge, positive and negative adjacent) as the electric dipole transmitter and another as a receiver. Transmitter and receiver antennas are currently using a principle like this.
schematic diagram of Hertz experiment Through these experiments Hertz successfully generate electromagnetic waves and is detected by the receiver. This experiment proved that electromagnetic waves that initially only a theoretical formulation of Maxwell, is really to be simultaneously confirmed Maxwell's theory of electromagnetic waves.
Electrical Energy Electrical energy is a form of energy that comes from the current source. Electrical energy can be converted into other forms, for example: • Electrical energy into heat energy / heat, for example: iron, solder, and electric stove. • electrical energy into light energy, eg light. • electrical energy into mechanical energy, eg electric motor. • Electrical energy into chemical energy, eg batteries charging events, events gilding (metal coating events with other metals).
When an electric current flowing in a Conductor that berhambatan R, then the current source will expend energy in-dependent Conductor: • The potential difference at the ends of the Conductor (V). • Strong currents flowing on the Conductor (i). • Time or duration of the current flows (t).
Based on the above statement, and because the price of V = Ri, then the electric energy equation can be formulated in the form: W = V.i.t = (R.i). I.t W = i ^ 2.R.t (in units of watt-seconds)
and since i = V / R, then the electric energy equation can also be formulated by: W = i ^ 2.R.t = (V / R ^ 2.R.t W = V ^ 2.t / R (in units of watt-seconds)
The advantages of using electrical energy: a. Easily converted into other forms of energy. b. Easily transmitted. c. Not much cause pollution / environmental pollution.
Electrical energy is released it does not go away, but turned into heat (calor) at Conductor. Big changes electrical energy into heat (calor) can be formulated: Q = 0.24 V i t ... ... calories Q = 0.24 i ^ 2 R t ... .. calories Q = 0.24 V ^ 2.t / R .... Calorie
If V, i, R, and t respectively in volts, amperes, ohms, and seconds, the heat (calor) is expressed in calories.
Constants obtained from experiments 0.24 joule, Joule In the experiments using a series of tools consisting of calorimeter which contains water and which have current Conductor of electricity. If the experiment Conductor electrical current was passed at the time t seconds, turns the heat due to electrical current proportional to: a. Potential difference between both ends of the wire Conductor (V) b. Strong current through the wire Conductor (i) c. Time during the current flows (t).
and the third relationship is known as the "law of Joule"
Since 1 joule of electrical energy converted into heat (calor) 0.24 calories. So the heat that occurs at the Conductor for an electrical current is: Q = 0.24 calories V.i.t
Electricity Electric power is the number of energy per unit time where the work is in progress or work done per unit time. From this definition, the electric power (P) can be formulated: Power = energy / time P = W / t P = V.i.t / t = V.i P = i ^ 2 R P = V ^ 2 / R (in units of volt-ampere, VA)
Power Unit: a. watt (W) = joules / sec b. kilowatt (kW): 1 kW = 1000 W.
From the power unit then comes the other energy units, namely: If the power expressed in kilowatts (kW) and the time in hours, the unit of energy is the kilowatt-hours or kilowatt-hour (kWh). 1 kWh = 36 x 105 joules
In International Units (SI), the unit of power is the watt (W) or equivalent Joule per second (J / sec). Electrical power is also expressed in watts (W) or kilowatts (kW). Conversion between units of HP and watts, expressed with the formula as follows:
1 HP = 746 W = 0.746 kW 1kW = 1.34 HP
Meanwhile, according to American standards (U.S. standard), power expressed in units Hourse Power (HP) or (ft) (lb) / (sec).
Utilization of Electrical Energy
Among the electric appliances in your home, you may have a hairdryer, a few lights, TV sets, stereos, microwave ovens, refrigerators and electric stoves. Each convert electrical energy into other forms of energy such as light energy, kinetic energy, sound energy, or heat energy. How much electrical energy is converted into other forms of energy? and at what speed? The energy in the power supply circuits can be used in several different ways. Motor change electrical energy into mechanical energy.Electric lights to change electrical energy into light. Unfortunately not all the energy applied to the motor or to the lamp can be utilized. Light, in particular light bulb cause heat. Motor too hot to touch. In each case, there are a number of energy which is converted into heat.
The theory of electric and magnetic Maxwell predicted the existence of wave elektromgnetik Maxwell's prediction of electromagnetic waves were really proven.Is Heinrich Hertz who proved the existence of electromagnetic waves through his experiments. Hertz experiment itself in the form of electromagnetic wave generation from an electric dipole (two poles are electrically charged with opposite charge, positive and negative adjacent) as the electric dipole transmitter and another as a receiver. Transmitter and receiver antennas are currently using a principle like this.
schematic diagram of Hertz experiment Through these experiments Hertz successfully generate electromagnetic waves and is detected by the receiver. This experiment proved that electromagnetic waves that initially only a theoretical formulation of Maxwell, is really to be simultaneously confirmed Maxwell's theory of electromagnetic waves.
Electrical Energy Electrical energy is a form of energy that comes from the current source. Electrical energy can be converted into other forms, for example: • Electrical energy into heat energy / heat, for example: iron, solder, and electric stove. • electrical energy into light energy, eg light. • electrical energy into mechanical energy, eg electric motor. • Electrical energy into chemical energy, eg batteries charging events, events gilding (metal coating events with other metals).
When an electric current flowing in a Conductor that berhambatan R, then the current source will expend energy in-dependent Conductor: • The potential difference at the ends of the Conductor (V). • Strong currents flowing on the Conductor (i). • Time or duration of the current flows (t).
Based on the above statement, and because the price of V = Ri, then the electric energy equation can be formulated in the form: W = V.i.t = (R.i). I.t W = i ^ 2.R.t (in units of watt-seconds)
and since i = V / R, then the electric energy equation can also be formulated by: W = i ^ 2.R.t = (V / R ^ 2.R.t W = V ^ 2.t / R (in units of watt-seconds)
The advantages of using electrical energy: a. Easily converted into other forms of energy. b. Easily transmitted. c. Not much cause pollution / environmental pollution.
Electrical energy is released it does not go away, but turned into heat (calor) at Conductor. Big changes electrical energy into heat (calor) can be formulated: Q = 0.24 V i t ... ... calories Q = 0.24 i ^ 2 R t ... .. calories Q = 0.24 V ^ 2.t / R .... Calorie
If V, i, R, and t respectively in volts, amperes, ohms, and seconds, the heat (calor) is expressed in calories.
Constants obtained from experiments 0.24 joule, Joule In the experiments using a series of tools consisting of calorimeter which contains water and which have current Conductor of electricity. If the experiment Conductor electrical current was passed at the time t seconds, turns the heat due to electrical current proportional to: a. Potential difference between both ends of the wire Conductor (V) b. Strong current through the wire Conductor (i) c. Time during the current flows (t).
and the third relationship is known as the "law of Joule"
Since 1 joule of electrical energy converted into heat (calor) 0.24 calories. So the heat that occurs at the Conductor for an electrical current is: Q = 0.24 calories V.i.t
Electricity Electric power is the number of energy per unit time where the work is in progress or work done per unit time. From this definition, the electric power (P) can be formulated: Power = energy / time P = W / t P = V.i.t / t = V.i P = i ^ 2 R P = V ^ 2 / R (in units of volt-ampere, VA)
Power Unit: a. watt (W) = joules / sec b. kilowatt (kW): 1 kW = 1000 W.
From the power unit then comes the other energy units, namely: If the power expressed in kilowatts (kW) and the time in hours, the unit of energy is the kilowatt-hours or kilowatt-hour (kWh). 1 kWh = 36 x 105 joules
In International Units (SI), the unit of power is the watt (W) or equivalent Joule per second (J / sec). Electrical power is also expressed in watts (W) or kilowatts (kW). Conversion between units of HP and watts, expressed with the formula as follows:
1 HP = 746 W = 0.746 kW 1kW = 1.34 HP
Meanwhile, according to American standards (U.S. standard), power expressed in units Hourse Power (HP) or (ft) (lb) / (sec).
Utilization of Electrical Energy
Among the electric appliances in your home, you may have a hairdryer, a few lights, TV sets, stereos, microwave ovens, refrigerators and electric stoves. Each convert electrical energy into other forms of energy such as light energy, kinetic energy, sound energy, or heat energy. How much electrical energy is converted into other forms of energy? and at what speed? The energy in the power supply circuits can be used in several different ways. Motor change electrical energy into mechanical energy.Electric lights to change electrical energy into light. Unfortunately not all the energy applied to the motor or to the lamp can be utilized. Light, in particular light bulb cause heat. Motor too hot to touch. In each case, there are a number of energy which is converted into heat.
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