A superconducting loop of radius `R` has self inductance `L`.`A` uniform & constant magnetic field `B` is applied perpendicular to the plane of the lo

A superconducting loop of radius `R` has self inductance `L`.`A` uniform & constant magnetic field `B` is applied perpendicular to the plane of the loop.Initially current in this loop is zer.The loop is rotated about its diameter by `180^(@)`.Find the current in the loop after rotation.

Monjur Alahi

6 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

Correct Answer - B
`epsilon=(dphi_(T))/(dt)=iR`
as `R=0` for super conducting loop
so `phi_(T)`=constant
`BpiR^(2)+0=-BpiR^(2)-LI`
`I=(2BpiR^(2))/L`

6 views Answered 2023-02-05 15:29

Related Questions

A magnetic needle is free to oscillate in a uniform magnetic field as shown in the figure. The magnetic moment of magnetic needle `7.2Am^(2)` and mome

2 Answers 25 Views

A square loop of side L, resistance R placed in a uniform magnetic field B acting normally to the plane of the loop. If we attempt to pull it out of t

2 Answers 4 Views

Assertion If a loop is placed in a non-uniform (with respect to position) magnetic field, then induced emf is produced in the loop. Reason In a non-un

2 Answers 6 Views

A rectangular copper coil is placed in a uniform magnetic field of induction 40 mT with its plane perpendicular to the field. The area of the coil is

2 Answers 6 Views

A very small circular loop of radius a is initially (at t = 0) coplanar and concentric with a much larger fixed circular loop of radius b. A constant

2 Answers 8 Views

The self-inductance of a solenoid of 600 turns is 108 mH. The self-inductance of a coil having 500 turns with the same length,

2 Answers 5 Views

A conducting loop confined in a plane is rotated in its own plane with some angular velocity.A uniform and constant magnetic field exist in the region

2 Answers 6 Views

iii) A circular loop of area \( \pi cm ^{2} \) and carrying current \( 10 \mu A \) is placed in magnetic field \( B \) with its plane perpendicular to \( B \). If \( B=\pi mT \), the magnitude of torque exerted on this loop is a) zero b) \( 10^{-11} Nm \) c) \( 10^{-7} Nm \) d) \( 10^{-1} Nm \)

2 Answers 4 Views

A ring is made of a nearly superconducting mate- rial. Inductance of the ring is `L = 0.5 H`. A current allowed to decay in the ring was observed to r

2 Answers 5 Views

A current loop, carrying a current of 5.0 A, is in the shape of a right triangle with sides 30,40, and 50 cm. The loop is in a uniform magnetic field

2 Answers 4 Views

এক্সাম দিয়ে মেধা যাচাই করুন

Job Preparation (1125)

Admission (754)

এসএসসি (10)

এইচএসসি (5)