Question

An alternating current $i$ in an inductance coil varies with time according to the graph given below. Which one of the following graphs gives the variation of voltage with time?

• A.
• B.
• C.
• D.

Answer 1

Answer: (C)

Answer 2

When the current increases the emf induced is $V=+L \frac{d i}{d t} \text { (say) }\,\,\,$...(i) When current decreases, emf induced is. $V=-L \frac{d i}{d t}\,\,\,$...(ii) The voltage induced changes