A circular coil 19.0 cm in diameter and containing nine loops lies flat on the g

Question

A circular coil 19.0 cm in diameter and containing nine loops lies flat on the ground. The Earth's magnetic field at this location has magnitude 8.00×105T and points into the Earth at an angle of 60.0 below a line pointing due north. If a 7.80 A clockwise current passes through the coil.

Part A

Determine the torque on the coil.

8.8•105

8.8*10^-5 is not the correct answer, please show your work, it is greatly appreciated.

A circular coil 19.0 cm in diameter and containing nine loops lies flat on the ground. The Earth's magnetic field at this location has magnitude 8.00×105T and points into the Earth at an angle of 60.0 below a line pointing due north. If a 7.80 A clockwise current passes through the coil.

Part A

Determine the torque on the coil.

8.8•105

8.8*10^-5 is not the correct answer, please show your work, it is greatly appreciated.

Explanation / Answer

Torque=(# of turns)(amps)(teslas)(Pi r^2) cos(theta)
Torque= (9)(7.8)(8E-5)(Pi* 0.095^2) (cos60)
Torque= 7.96 x10^-5 N m

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