A bar magnet is inserted completely into two identical circular coils of resistance
PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
A bar magnet is inserted completely into two identical circular coils of resistance R. In experiment I the insertion takes 0.1s, while in experiment II it takes 1.0s. Which one of the following physical quantities has the same magnitude in both experiments?
(a) Heat produced in the coil
(b) Total charge that flows through the coil
(c) Peak value of induced current
(d) Average induced emf during the insertion