A solenoid having 170 turns and a cross-sectional area of 6.72 cm2 carries a cur

Question

A solenoid having 170 turns and a cross-sectional area of 6.72 cm2 carries a current of 1.10 A .

Part A

If it is placed in a uniform 1.18 T magnetic field, find the torque this field exerts on the solenoid if its axis is oriented perpendicular to the field.

1 = ____ Nm

Part B

If it is placed in a uniform 1.18 T magnetic field, find the torque this field exerts on the solenoid if its axis is oriented parallel to the field.

2 = ____ Nm

Part C

If it is placed in a uniform 1.18 T magnetic field, find the torque this field exerts on the solenoid if its axis is oriented at 45.0 o with the field.

3 = ____ Nm

Explanation / Answer

A) 1 = n*i*A*B*cos(0) = 0 N-m

B) 2= n*i*A*B = 170*1.1*6.72*10^-4*1.18 = 0.148 N-m

C) 3 = 0.148*cos(45) = 0.104 N-m

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