Question

In an electric motor, a circular coil with 100 turns of radius $2.0 \mathrm{~cm}$ can rotate between the poles of a magnet. When the current through the coil is $75 \mathrm{~mA},$ the maximum torque that the motor can deliver is $0.0020 \mathrm{~N} \cdot \mathrm{m} .$ (a) What is the strength of the magnetic field? (b) Is the torque on the coil clockwise or counterclockwise as viewed from the front at the instant shown in the figure?

Name: In an electric motor, a circular coil with 100 turns of radius 2.0 cm can rotate between the poles of a magnet. When the current through the coil is 75 mA, the maximum torque that the motor can deliver is 0.0020 N·m . (a) What is the strength of the magnetic field? (b) Is the torque on the coil clockwise or counterclockwise as viewed from the front at the instant shown in the figure?
Uploaded: 2022-05-28T07:17:09-08:00
Duration: 2 min 41 s
Channel: Sri K
Description: In an electric motor, a circular coil with 100 turns of radius 2.0 cm can rotate between the poles of a magnet. When the current through the coil is 75 mA, the maximum torque that the motor can deliver is 0.0020 N·m . (a) What is the strength of the magnetic field? (b) Is the torque on the coil clockwise or counterclockwise as viewed from the front at the instant shown in the figure?

          In an electric motor, a circular coil with 100 turns of radius $2.0 \mathrm{~cm}$ can rotate between the poles of a magnet. When the current through the coil is $75 \mathrm{~mA},$ the maximum torque that the motor can deliver is $0.0020 \mathrm{~N} \cdot \mathrm{m} .$ (a) What is the strength of the magnetic field? (b) Is the torque on the coil clockwise or counterclockwise as viewed from the front at the instant shown in the figure?

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University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Sri K

05/28/2022

Step 1

Given: Radius, r = 2.0 cm = 0.02 m Number of turns, N = 100 The area of the circular coil, A = πr^2 A = π(0.02)^2 A = 3.14 * 0.0004 A = 0.001256 m^2 Show more…

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In an electric motor, a circular coil with 100 turns of radius $2.0 \mathrm{~cm}$ can rotate between the poles of a magnet. When the current through the coil is $75 \mathrm{~mA},$ the maximum torque that the motor can deliver is $0.0020 \mathrm{~N} \cdot \mathrm{m} .$ (a) What is the strength of the magnetic field? (b) Is the torque on the coil clockwise or counterclockwise as viewed from the front at the instant shown in the figure?