A long solenoid has 1000 turns per meter length of solenoid. A current of 3.2 A flow through it. The magnetic induction at the end of solenoid is

Question

A long solenoid has 1000 turns per meter length of solenoid. A current of 3.2 A flow through it. The magnetic induction at the end of solenoid is (A) 2 × 10-3 T (B) 8 × 10-4 T (C) 8 × 10-3 T (D) 2 × 10-4 T

Tardigrade Admin · Accepted Answer

B text end =(μ0 n I/2) =(4 π × 10-7 × 1000 × 3.2/2) =2 × 10-3 T

Q. A long solenoid has $1000$ turns per meter length of solenoid. A current of $3.2 A$ flow through it. The magnetic induction at the end of solenoid is

$2 \times 1 0^{- 3} T$

$8 \times 1 0^{- 4} T$

$8 \times 1 0^{- 3} T$

$2 \times 1 0^{- 4} T$

$B_{end} = \frac{μ _{0} n I}{2}$
$= \frac{4 π \times 1 0 ^{- 7} \times 1000 \times 3.2}{2}$
$= 2 \times 1 0^{- 3} T$

Q. A long solenoid has 1000 turns per meter length of solenoid. A current of 3.2A flow through it. The magnetic induction at the end of solenoid is

2×10−3T

8×10−4T

8×10−3T

2×10−4T