railway RRB Technician Grade 1 Mock Test 2024 Physics Moving Charges and Magnetism

The magnitude of magnetic force per unit length (N/m) on a wire carrying a current of 8 A and making an angle of 30° with the direction of a uniform magnetic field of 0.15 T is:

1
0.15 
2
1.2 
3
0.6 
4
0.8
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