A solenoid of 1.5 m length and 4.0 cm diameter possesses 10 turns/cm. A current of 5 A is flowing through it. The magnetic induction a axis inside the solenoid is

Question

A solenoid of 1.5 m length and 4.0 cm diameter possesses 10 turns/cm. A current of 5 A is flowing through it. The magnetic induction a axis inside the solenoid is (A) 2 π × 10-3 T (B) 2 π × 10-5 T (C) 4 π × 10-5 T (D) 4 π × 10-3 T

Tardigrade Admin · Accepted Answer

Magnetic field B=μ0 n i =4 π × 10-7 × 5 × 1000 =2 π × 10-3 T

Q. A solenoid of $1.5 m$ length and $4.0 c m$ diameter possesses $10$ turns/cm. A current of $5 A$ is flowing through it. The magnetic induction a axis inside the solenoid is

$2 π \times 1 0^{- 3} T$

$2 π \times 1 0^{- 5} T$

$4 π \times 1 0^{- 5} T$

$4 π \times 1 0^{- 3} T$

Magnetic field $B = μ_{0} ni$
$= 4 π \times 1 0^{- 7} \times 5 \times 1000$
$= 2 π \times 1 0^{- 3} T$

Q. A solenoid of 1.5m length and 4.0cm diameter possesses 10 turns/cm. A current of 5A is flowing through it. The magnetic induction a axis inside the solenoid is

2π×10−3T

2π×10−5T

4π×10−5T

4π×10−3T