Question

20. (iv) After analysing the graph a student writes the following statements.
1. The magnetic field produced by the solenoid is inversely proportional to the current.
II. The magnetic field produced by the solenoid is directly proportional to the current.
III. The magnetic field produced by the solenoid is directly proportional to square of the current.
IV. The magnetic field produced by the solenoid is independent of the current.​

Answer 1

Answer:

Magnetic field inside a solenoid is given by

B=μ

0

nI

therefore, B∝I