Question

When the rate of change of current is unity, the induced emf is equal to

• A. Thickness of coil
• B. Number of turns in coil
• C. Coefficient of self inductance
• D. Total flux linked with coil

Answer 1

Answer: (C)

Coefficient of self inductance

Answer 2

As , $\varepsilon = L\frac{dI}{dt}$

When $\frac{dI}{dt} = 1$ $\therefore\varepsilon = L$