Electrical engineering
Electrical
Summary
Equivalent resistance series circuit and parallel circuit, Coulomb's law, Biot-Savart law, magnetic moment, Kirchoff, current, voltage, resistance.
Current, voltage and resistance
Current is expressend in Ampères, voltage in Volts an resistance in Ohm. Once a material offers a lot of resistance, it is hard for the current to pass. The current is inversely proportional with the resistance.
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Equivalent resistance
One can calculate the equivalent resistance if a combination of resistors is given. In a series circuit, the resistance are being summed. In a parallel circuit, it is a little more complicated.
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Kirchhoff's laws
The summed incoming currents on a node equal the outgoing currents. The summed voltages in a loop equal zero.
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Coulomb's law
The force exerted by two charged particles on each other is inversely proportional with the distance between the particles squared. The k in Coulomb's law is a constant, also known as the electrostatical constant. This constant equals 8,99 * 109 N m2 C-2.
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Biot-Savart law
Biot-Savart's law can be used to calculate the magnetic field in a certain point caused bij a (constant!) current flowing trough a wire.
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