Question Detail

PHY 102 Test Compilation PHY 102 1 Objective Question
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Question

galvanometer has spring constant ‘k’, a magnetic field ‘B’ and deflection angle θ. The coil has N turns and an area A. Which of the following is the condition for equilibrium of the coil when current I flows in the galvanometer.
Options
A KB = θIAN
B Kθ = BIAN
Correct Answer
C BI = KθAN
D Kθ = BA/IN
Correct Answer

Option B is the correct answer.

Detailed Explanation

Magnetic torque = B I N A, restoring torque = kθ. At equilibrium: kθ = B I N A.

Hint

Equate magnetic torque (BINA) to spring torque (kθ).

Question Info

Course: PHY 102
Topic: Test Compilation PHY 102 1
Type: Objective
Difficulty: Not specified
Question 177 of 1819
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