A thin circular coil of resistance and radius is placed with its plane perpendicular…
PHYSICS · Multi-part · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
A thin circular coil of resistance 2Ω and radius 10cm is placed with its plane perpendicular to a uniform magnetic field. The field is increased steadily from 0.20T to 0.80T in 0.020s.
(i) Calculate the magnitude of the average emf induced in the coil during this interval.
(ii) Determine the magnitude and direction of the induced current in the coil.
(iii) Find the total charge that passes through the coil in the given time.