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 at 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 at axis inside the solenoid is (A) 2 π × 10-3T  (B) 2 π × 10-5T  (C) 2 π × 10-3G  (D) 2 π × 10-5G

Tardigrade Admin · Accepted Answer

Magnetic field B = μ 0ni =4 π × 10-7 × 5 × 1000 = 2 π × 10-3 T

Q. 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 at axis inside the
solenoid is

$2 π \times 1 0^{- 3} T$

$2 π \times 1 0^{- 5} T$

$2 π \times 1 0^{- 3} G$

$2 π \times 1 0^{- 5} G$

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

2π×10−3T

2π×10−5T

2π×10−3G

2π×10−5G