Question

An ac generator consists of 6 turns of wire. Each turn has an area of 0. 010 m2. the loop rotates in a uniform field (b = 0. 20 t) at a constant frequency of 40 hz. What is the maximum induced emf?

Answer 1

If an ac generator consists of 6 turns of wire. Each turn has an area of 0. 010 m2. the loop rotates in a uniform field (b = 0. 20 t) at a constant frequency of 40 hz. The maximum induced emf is 0.048 volt.

Given,

Number of turns (N) = 6

Area of each turn (A) $=0.010 m^{2}$

Magnetic field (B) = 0.2 T

The loop rotates at a constant frequency of 40 Hz

Thus angular frequency of rotation (ω) = 40 Hz

∴ The maximum induced emf,

    ε = NABω

⇒ ε= 6×0.01×0.02×40 = 0.048 volt

∴The maximum induced emf in ac generator is 0.048 volt.

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