Question

A coil is placed in a magnetic field $\vec{B}$ as shown below :

A current is induced in the coil because $\vec{B}$ is :

• A. Outward and decreasing with time
• B. Parallel to the plane of coil and decreasing with time
• C. Outward and increasing with time
• D. Parallel to the plane of coil and increasing with time

Answer 1

Answer: (A)

$\overrightarrow{B}$ must not be parallel to the plane of coil for non zero flux and according to lenz law if $B$ is outward it should be decreasing for anticlockwise induced current.