Question

When a magnetic compass needle is carried nearby to a straight wire carrying current, then

1. the straight wire cause a noticeable deflection in the compass needle.
2. the alignment of the needle is tangential to an imaginary circle with straight wire as its centre and has a plane perpendicular to the wire.

Options

• (I) is correct.

• (II) is correct.

• both (I) and (II) are correct.

• niether (I) nor (II) is correct.

Answer 1

both (I) and (II) are correct.