The magnetic flux linked with a stationary coil behaves as follows: it remains…
PHYSICS · Multi-part · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
The magnetic flux Φ linked with a stationary coil behaves as follows: it remains constant from t=0 to 2s, then decreases uniformly with time from t=2s to 4s, and again becomes constant thereafter.
(i) In which time intervals is the induced emf in the coil zero?
(ii) In which time interval is it non-zero?
(iii) State whether the emf in the non-zero interval is positive or negative.