railway RRB JE (CBT I + CBT II) Mock Test 2024 Physics Moving Charges and Magnetism Magnetic Field due to a Current Element
The magnetic field due to a straight current-carrying wire is-
1
inversely proportional to the current in the wire
2
directly proportional to the current in the wire
3
inversely proportional to the square of the current in the wire
4
does not depend on the current in the wire