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Magnetic circuits
Magnetic fields A permanent magnet is a piece of ferromagnetic material (such as iron, nickel…
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Capacitance
Capacitors Every system of electrical conductors possesses capacitance. For example, there is capacitance between the…
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Capacitors and capacitance
Electrostatic field Figure 6.1 represents two parallel metal plates, A and B, charged to different…
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Potential divider
The voltage distribution for the circuit shown in Figure 5.5(a) is given by
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Primary cells
Primary cells cannot be recharged, that is, the conversion of chemical energy to electrical energy…
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Chemical effects of electricity
A material must contain charged particles to be able to conduct electric current. In solids,…
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Temperature coefficient of resistance
In general, as the temperature of a material increases, most conductors increase in resistance, insulators…