Question Detail

PHY 102 Last Minute Prep Objective Question
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Question

A loop of wire of 25 turns has an area of 2.0×10^-2 m². A current of 1.25 A flows in the loop. Calculate the torque when its plane is parallel to a uniform magnetic field of 0.2 T
Options
A 4.10×10^-1 Nm
B 3.26×10^-1 Nm
C 2.47×10^-1 Nm
D 1.25×10^-1 Nm
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

τ = N I A B = 25 × 1.25 × 2.0×10^-2 × 0.2 = 0.125 Nm = 1.25×10^-1 Nm.

Hint

Use the torque formula for a coil in a magnetic field: τ = N I A B.

Question Info

Course: PHY 102
Topic: Last Minute Prep
Type: Objective
Difficulty: Not specified
Question 1715 of 1819
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