Question

A cooper wire is held between the poles of a magnet.
The current in the wire can be reversed. The pole of the magnet can also be changed over. In how many of the four directions shown can the force act on the wire?
A. 1
B. 2
C. 3
D. 4

Answer 1

The correct answer is option (B.) 2.

Explanation:

• A cooper wire is held between the poles of a magnet.
• The current in the wire can be reversed. The pole of the magnet can also be changed over.
• Therefore, The four directions shown can the force act on the wire is 2 as From the Fleming's left hand rule, we know that the force acting on the wire must be perpendicular to the current in the wire and the magnetic field.
• So, The force on the wire due to the interaction of the magnetic fields of the bar magnet and current carrying wire can act only in upwards or downwards directions.
• Hence, the correct answer is option B. i.e 2

Answer 2

Answer:

b 2

Explanation:

The answer is option b which is 2
mark me brainliest