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Reluctance
Composite series magnetic circuits For a series magnetic circuit having n parts, the total reluctance…
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Magnetic flux and flux density
Magnetic flux is the amount of magnetic field (or the number of lines of force)…
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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…