Question

An infinite current-carrying conductor is placed along the z-axis and a wire loop is kept in the x-y plane. The current in the conductor is increasing with time. Then the

• A. emf induced in the wire loop is zero
• B. magnetic flux passing through the wire loop is zero
• C. emf induced is zero but magnetic flux is not zero
• D. emf induced is not zero but magnetic flux is zero
• E. answer required

Answer 1

Answer: (A), (B)

The correct options are
A magnetic flux passing through the wire loop is zero
B emf induced in the wire loop is zero

Magnetic flux = $B.dA$
Here the $\overrightarrow{B}$ and $\overrightarrow{A}$ are perpendicular to each other as shown in fig.
hence $\varphi =0$
hence no EMF induced.