Question

(1) The strength of magnetic field due to a solenoid
depends on the
(a) number of turns in the solenoid
(b) strength of current in the solenoid
(c) nature of core material
(d) all of the above​

Answer 1

Answer:

The magnetic field inside a solenoid is proportional to both the applied current and the number of turns per unit length. There is no dependence on the diameter of the solenoid, and the field strength doesn't depend on the position inside the solenoid, i.e., the field inside is constant.

Answer 2

Answer:

number of turns in the solenoid

this is answer