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JEE Main 2024 (Online) 27th January Morning Shift
Numerical
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Two long, straight wires carry equal currents in opposite directions as shown in figure. The separation between the wires is $$5.0 \mathrm{~cm}$$. The magnitude of the magnetic field at a point $$\mathrm{P}$$ midway between the wires is _______ $$\mu \mathrm{T}$$

(Given : $$\mu_0=4 \pi \times 10^{-7} \mathrm{TmA}^{-1}$$)

JEE Main 2024 (Online) 27th January Morning Shift Physics - Magnetic Effect of Current Question 28 English

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2
JEE Main 2023 (Online) 15th April Morning Shift
Numerical
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An electron in a hydrogen atom revolves around its nucleus with a speed of $6.76 \times 10^6 \mathrm{~ms}^{-1}$ in an orbit of radius $0.52 \mathrm{~A}^{\circ}$. The magnetic field produced at the nucleus of the hydrogen atom is _________ T.
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3
JEE Main 2023 (Online) 13th April Evening Shift
Numerical
+4
-1
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A straight wire $$\mathrm{AB}$$ of mass $$40 \mathrm{~g}$$ and length $$50 \mathrm{~cm}$$ is suspended by a pair of flexible leads in uniform magnetic field of magnitude $$0.40 \mathrm{~T}$$ as shown in the figure. The magnitude of the current required in the wire to remove the tension in the supporting leads is ___________ A.

$$\left(\right.$$ Take $$g=10 \mathrm{~ms}^{-2}$$ ).

JEE Main 2023 (Online) 13th April Evening Shift Physics - Magnetic Effect of Current Question 40 English

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4
JEE Main 2023 (Online) 10th April Evening Shift
Numerical
+4
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A straight wire carrying a current of $$14 \mathrm{~A}$$ is bent into a semi-circular arc of radius $$2.2 \mathrm{~cm}$$ as shown in the figure. The magnetic field produced by the current at the centre $$(\mathrm{O})$$ of the arc. is ____________ $$\times ~10^{-4} \mathrm{~T}$$

JEE Main 2023 (Online) 10th April Evening Shift Physics - Magnetic Effect of Current Question 37 English

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