Question Detail

PHY 102 Test Compilation PHY 102 19 Objective Question
Take CBT

Question

A galvanometer has spring constant 'k', a magnetic field 'B' and deflection angle θ. The coil has N turns and area A. Which of the following is the condition for equilibrium of the coil when current I flows through 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

At equilibrium, the restoring torque from the spring (kθ) balances the deflecting torque from the magnetic field (NBIA), giving kθ = NBIA.

Hint

Set the spring's restoring torque equal to the magnetic deflecting torque on the coil.

Question Info

Course: PHY 102
Topic: Test Compilation PHY 102 19
Type: Objective
Difficulty: Not specified
Question 1199 of 1819
Previous Course Details Next