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Torque on a Current Loop - 1 Video Lecture | Physics for JAMB

FAQs on Torque on a Current Loop - 1 Video Lecture - Physics for JAMB

1. What is torque on a current loop?

Ans. Torque on a current loop refers to the twisting or rotational force experienced by a loop of wire carrying an electric current in the presence of a magnetic field. It is a measure of the tendency of the current loop to rotate.

2. How is the torque on a current loop calculated?

Ans. The torque on a current loop can be calculated using the formula: Torque = I * A * B * sin(θ), where I is the current flowing through the loop, A is the area of the loop, B is the magnetic field strength, and θ is the angle between the magnetic field and the plane of the loop.

3. What factors affect the torque on a current loop?

Ans. The torque on a current loop depends on several factors, including the current flowing through the loop, the area of the loop, the strength of the magnetic field, and the angle between the magnetic field and the plane of the loop. Changing any of these factors can alter the torque experienced by the loop.

4. How does the direction of the current affect the torque on a current loop?

Ans. The direction of the current in the loop determines the direction of the torque. If the current flows in the same direction as the magnetic field, the torque will be maximized. If the current flows in the opposite direction, the torque will be reversed.

5. What is the significance of torque on a current loop?

Ans. The torque on a current loop is of great importance in various applications. It is the principle behind the operation of electric motors and generators, where the torque on a current-carrying loop interacts with the magnetic field to produce rotational motion or generate electricity. Understanding torque on a current loop is essential for designing and optimizing these devices.

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Sep 23, 2025 Last updated

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