Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Moving Charges and Magnetism

Question:

Figure shows a part of an electric circuit, PQRS is a rectangular loop made up of uniform wire in which PS = QR = 2 cm. The sides PQ and SR are sufficiently long as compared to the PS and QR. What will be the magnetic force per unit length acting on the wire SR due to the wire PQ if the ammeter reads 12 A?

Options:

$1.44 \times 10^{-3} Nm^{-1}$

$3.6 \times 10^{-4} Nm^{-1}$

$1.44 \times 10^{-4} Nm^{-1}$

$3.6 \times 10^{-5} N m^{-1}$

Correct Answer:

$3.6 \times 10^{-4} Nm^{-1}$

Explanation:

The correct answer is Option (2) → $3.6 \times 10^{-4} Nm^{-1}$