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Q.

Magnetic field due to a straight solenoid at any point inside it is B = μ0ni. Magnetic field at the end of the solenoid is

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a

B

b

B/2

c

B/4

d

2B

answer is B.

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Detailed Solution

Magnetic field at the end of a current carrying solenoid. is half of the magnetic field inside it.

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Magnetic field due to a straight solenoid at any point inside it is B = μ0ni. Magnetic field at the end of the solenoid is