Home
Class 12
PHYSICS
Figure. shows one quarter of a simple ci...

Figure. shows one quarter of a simple circular loop of wire that carries a current of 14 A. Its radius is `a=5 cm.` A uniform magnetic field, `B =300 G,` is directed in the +x direction. Find the torque on the entire loop and the direction in which it will rotate.

Text Solution

Verified by Experts

The normal to the loop, OP, makes an angle `theta=60^@` with the +
x direction, the field direction. Hence,
`tau=NIAB sin theta=(1)(14A)(pixx25xx10^-4m^2)(0.03T) sin 60^@`
`=2.9xx10^-3Nm`
The right hand rule shows that the loop will rotate about the
y-axis, so as to decrease the angle labelled `60^@`
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC FIELD AND MAGNETIC FORCES

    CENGAGE PHYSICS ENGLISH|Exercise Exercises Subjective|10 Videos

  • MAGNETIC FIELD AND MAGNETIC FORCES

    CENGAGE PHYSICS ENGLISH|Exercise Exercises Single Correct|70 Videos

  • MAGNETIC FIELD AND MAGNETIC FORCES

    CENGAGE PHYSICS ENGLISH|Exercise Exercise 1.2|13 Videos

  • INDUCTANCE

    CENGAGE PHYSICS ENGLISH|Exercise Concept Based|8 Videos

  • MISCELLANEOUS VOLUME 3

    CENGAGE PHYSICS ENGLISH|Exercise True and False|3 Videos

Similar Questions

Explore conceptually related problems

A triangular loop of side l carries a current I . It is placed in a magnetic field B such that the plane of the loop is in the direction of B . The torque on the loop is

Given figure shows a coil bent with all edges of length 1 m and carrying a current of 1 A . There exists in space a uniform magnetic field of 2 T in positive y-direction. Find the torque on the loop.

A triangular loop of side l carries a current l. It is placed in a magnetic field B such that the plane of the loop is in the direction of B. The torque on the loop is

A circular flexible loop of wire of radius r carrying a current I is placed in a uniform magnetic field B . If B is doubled, then tension in the loop

A small circular flexible loop of wire of radius r carries a current I . It is placed in a uniform magnetic field B . The tension in the loop will be doubled if (Choose the incorrect option)

A circular loop of one turn carries a current of 5.00 A. If the magnetic field B at the centre is 0.200 mT, find the radius of the loop.

A loop PQR carries a current i = 2A as shown in the figure. A uniform magnetic field B = 2T exists in space parallel to the plane of the loop . The magnetic torque on the loop is

A circular loop of area 1cm^2 , carrying a current of 10 A , is placed in a magnetic field of 0.1 T perpendicular to the plane of the loop. The torque on the loop due to the magnetic field is

A long wire having a semi-circular loop of radius r carries a current I, as shown in Fig. Find the magnetic field due to entire wire.

A conducting circular loop of radius r carries a constant current i. It is placed in a uniform magnetic field B such that B is perpendicular to the plane of loop. What is the magnetic force acting on the loop?