Question

When a conducting wire XY is moved towards the right, a current flows in the anti-clockwise direction, Direction of magnetic field at point O is

• A. Parallel to motion of wire
• B. Along XY
• C. Perpendicular outside the paper
• D. Perpendicular inside the paper

Answer 1

The correct option is C Perpendicular outside the paper

Given :When a conducting wire XY is moved towards the right, a current flows in the anti-clockwise direction, Direction of magnetic field at point O is

Solution :

We have a formula for finding Emf=$l(\overrightarrow{V}\times \overrightarrow{B})$

Here current is flowing from X to Y so X is high potential and Y is low potential for this to happen satisfying cross product between V abd B Magnetic field should be perpendicularly outside the plane of paper.

The Correct Opt:C