Question
Physics Question on Moving charges and magnetism
A 250-Turn rectangular coil of length 2.1 cm and width 1.25 cm carries a current of 85 μA and subjected to a magnetic field of strength 0.85 T. Work done for rotating the coil by 180° against the torque is
A
9.1 μJ
B
4.55 μJ
C
2.3 μJ
D
1.15 μJ
Answer
9.1 μJ
Explanation
Solution
The correct option is (A): 9.1 μJ.