Home › AP EAPCET (Engineering) › Physics › Electromagnetic Induction › A magnet moved towards a fixed coil is then held…
A magnet moved towards a fixed coil is then held still. What does the galvanometer show?
AReversed deflection
BOscillating deflection
CMaximum deflection
DZero deflection
Answer & Solution
Correct answer: D. Zero deflection
Induced current exists only while the flux through the coil is changing, so it vanishes when the magnet stops.
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?