Question

A long solenoid is formed by winding $70$ turns $cm ^{-1}$ If $20$ A current flows, then the magnetic field produced inside the solenoid is ______$\left(\mu_o=4 \pi \times 10^{-7} TmA ^{-1}\right)$

• A. $88 \times 10^{-4} T$
• B. $1232 \times 10^{-4} T$
• C. $352 \times 10^{-4} T$
• D. $176 \times 10^{-4} T$

Answer 1

Answer: (D)

$176 \times 10^{-4} T$

Answer 2

The correct option is(D): $176 \times 10^{-4} T$.