Question

Magnetic field due to current carrying solenoid is independent of its length and cross-sectional area The magnetic field inside the solenoid is uniform

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (B)

If both assertion and reason are true but reason is not the correct explanation of assertion

Answer 2

Magnetic field due to a solenoid having $n$ number of turns per metre and carrying current $I$ is $B=\mu_{0}nI$ which is independent of the length and area of cross section of the solenoid The magnetic field inside the solenoid is uniform