A solenoid long has turns and is placed in a region where a uniform magnetic field of…
PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
A solenoid 40cm long has 1000 turns and is placed in a region where a uniform magnetic field of 2mT acts opposite to the field produced by the solenoid. Determine the current that must flow through the solenoid so that the net magnetic field inside it is zero.