Question

The magnetic flux through a coil varies with time $t$ as shown in the diagram. Which graph best represents the variation of the e.m.f. $E$ induced in the coil with time $t ?$

• A.
• B.
• C.
• D.

Answer 1

Answer: (C)

$\phi=A \sin \omega t$
$\varepsilon=-\frac{d \phi}{d t}=-A \omega \cos \omega t$