A long solenoid has 800 turns per metre length of solenoid. A current of 1.6 A flows through it. The magnetic induction at the end of the solenoid on its axis is

Question

A long solenoid has 800 turns per metre length of solenoid. A current of 1.6 A flows through it. The magnetic induction at the end of the solenoid on its axis is (A) 16 × 10-4 T (B) 8 × 10-4 T (C) 32 × 10-4 T (D) 4 × 10-4 T

Tardigrade Admin · Accepted Answer

B=(μ0 n I/2)=((4 π × 10-7) × 800 × 1.6/2) =8 × 10-4 T

Q. A long solenoid has 800 turns per metre length of solenoid. A current of 1.6 A flows through it. The magnetic induction at the end of the solenoid on its axis is

$16 \times 1 0^{- 4} T$

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

$32 \times 1 0^{- 4} T$

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

$B = \frac{μ _{0} n I}{2} = \frac{( 4 π \times 1 0 ^{- 7} ) \times 800 \times 1.6}{2}$
$= 8 \times 1 0^{- 4} T$

Q. A long solenoid has 800 turns per metre length of solenoid. A current of 1.6 A flows through it. The magnetic induction at the end of the solenoid on its axis is

16×10−4T

8×10−4T

32×10−4T

4×10−4T

B=2μ0​nI​=2(4π×10−7)×800×1.6​ =8×10−4T

$16 \times 1 0^{- 4} T$

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

$32 \times 1 0^{- 4} T$

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

$B = \frac{μ _{0} n I}{2} = \frac{( 4 π \times 1 0 ^{- 7} ) \times 800 \times 1.6}{2}$
$= 8 \times 1 0^{- 4} T$