Home › Bihar Board Class 12 (Science) › Physics › Electromagnetic Induction › A toroid has 1200 turns, minor radius 2.0 cm and…
A toroid has 1200 turns, minor radius 2.0 cm and major radius 15 cm. What is its self-inductance?
A2.414 mH
B24.14 mH
C0.2414 mH
D241.4 mH
Answer & Solution
Correct answer: A. 2.414 mH
L = mu0 N^2 r^2 / (2R) works out to about 2.414 x 10^-3 H.
Related questions
What are the dimensions-based units of emf, as listed for electromotive force?Induced emf in a loop is what when the flux through it stays constant?A generator coil's plane is perpendicular to the field. What is the emf then?In an ac generator, the angle between B and the coil's area vector at time t is wt. What iThe speed of rotation of an ac generator coil is doubled, other things equal. How does theA coil has 50 turns, area 0.02 square metre, in a 0.4 T field, rotating at 100 rad/s. WhatA coil of N turns, area A rotates at n revolutions per second in a field B. What is the maHow are the ends of the coil of an ac generator joined to the external circuit?