First slide
Inductance
Question

In a coil of self-inductance 0.5 henry, the current varies at a constant rate from zero to 10 amperes in 2 seconds. The e.m.f. generated in the coil is

Moderate
Solution

ΔiΔt=102=5 A/s|e|=LΔiΔt=0.5×5=2.5 volts 

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