CUET Preparation Today
A solenoid has 100 turns and is of length 20 cm. It carries a current of 5A. The magnetic field in the middle of the solenoid is |
3.14 mT 310 mT 62 mT 314 mT |
3.14 mT |
The correct answer is Option (1) → 3.14 mT The magnetic field inside a solenoid - $B=μ_0nI$ $=(4\pi×10^{-7})×\frac{100}{0.20}×5$ $=3.14×10^{-3}T$ $=3.14mT$ |
