# Answer on Electromagnetism Question for John

Question #50957

A rectangular coil of dimensions 20cm by 15cm lies with its plane parallel to a magnetic field of 0.5W/m^2. The coil, carrying a current of 10A experiences a torque of 4.5Nm in the field. How many loops has the coil?

a) 100

b) 60

c) 30

d) 20

a) 100

b) 60

c) 30

d) 20

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