The magnetic field inside a 200 turns solenoid of radius 10 cm is 2.9 × 10⁻⁴ Tesla. If the solenoid carries a current of 0.29 A, then the length of the solenoid is _ _ _ π cm.

Magnetic Effects of Current and Magnetism: JEE Main 2025 Physics question

JEE Main 2025 · 29 Jan, Evening shift · Q46

JEE Main 202529 Jan, Evening shiftPhysicsMediumMagnetic Effects of Current and Magnetism165× since 2002

The magnetic field inside a 200 turns solenoid of radius 10 cm is

2.9 \times 10^{-4}

Tesla. If the solenoid carries a current of 0.29 A, then the length of the solenoid is ______

\pi

cm.

Your answerType your answer. Integers and decimals are accepted.

JEE Main 2025 Magnetic Effects of Current and Magnetism Question with Solution (29 Jan Evening shift, Q46) | JEE Arc

JEE Main 2025 · 29 Jan, Evening shift · Q46

JEE Main 202529 Jan, Evening shiftPhysicsMediumMagnetic Effects of Current and Magnetism165× since 2002

The magnetic field inside a 200 turns solenoid of radius 10 cm is

2.9 \times 10^{-4}

Tesla. If the solenoid carries a current of 0.29 A, then the length of the solenoid is ______

\pi

cm.

Your answerType your answer. Integers and decimals are accepted.