A coil is connected to an analogue centre zero ammeter. A magnet is dropped (North pole first) so that it falls vertically and completely through the coil. What would be observe on the ammeter?
The ammeter's needle would first be deflected one way, then as the direction of the current reversed, it would deflect the other way.
LV
Related Physics A Level answers
All answers ▸If you have 1.33g of oxygen (Mr = 32) in a container of volume 1000cm^3 at atmospheric pressure (101.3*10^3 Pa), what is the temperature of the gas in Celsius? R=8.314
Two people sit opposite each other on the edge of a rotating disk of radius, R, and negligible mass. One person has a mass of 40kg, the other of 50kg. The disk is rotating at 30 revs/min. What is the rotational kinetic energy if R=1.5m?
Explain why an object moving around a circle is said to be accelerating when it has no resultant force acting upon it.
Explain the photoelectric effect, when does it occur and what is its significance in understanding the nature of light ? (6)