Q.

A copper rod AB of length l is made to move with constant velocity v→ in a uniform magnetic field of induction B→ as shown in the figure. Then

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away
An Intiative by Sri Chaitanya

a

end A will acquire positive polarity and end B will acquire negative polarity.

b

ends A and B of the rod will acquire positive polarity and mid point C will acquire negative polarity.

c

ends A and B of the rod will acquire negative polarity and mid point C will acquire positive polarity.

d

end A will acquire negative polarity and end B will acquire positive polarity.

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Magnetic force on each free electron in the rod Fe→=(-e) v→ x B→ which is directed from A to B. As a result free electrons will move towards end B. Hence end A becomes positively charged and end B becomes negatively charged.
Watch 3-min video & get full concept clarity
score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon
A copper rod AB of length l is made to move with constant velocity v→ in a uniform magnetic field of induction B→ as shown in the figure. Then