Question

Assertion (A): Two long parallel wires, freely suspended and connected in series to a battery, move apart.
Reason (R):Two wires carrying current in opposite directions repel each other.

• A. Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
• B. Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
• C. Assertion (A) is true, but Reason (R) is false.
• D. Assertion (A) is false and Reason (R) is also false.

Hint:

The force between two current-carrying wires depends on the direction of the currents. When currents are in opposite directions, the wires repel each other, and when currents are in the same direction, the wires attract each other.

Answer 1

The Correct Option is A

The assertion posits that two long, parallel, freely suspended wires, connected in series to a battery, will move apart. This separation is attributed to magnetic forces between the wires, arising from the magnetic fields generated by the electric currents they carry.
The reason explains that wires carrying current in opposite directions will repel. This phenomenon is a consequence of Ampère's Law, which governs the force between parallel currents. When currents are antiparallel, their respective magnetic fields exert a repulsive force, leading to the observed outward movement.
Consequently, both the assertion and the reason are factually correct, and the reason adequately elucidates the assertion.
Therefore, the correct option is:\[\text{(A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).}\]