MHT CET 2026 15th April Morning Shift | Moving Charges and Magnetism Question 33 | Physics

If a galvanometer is shunted by $\left(\dfrac{1}{n-1}\right)^{th}$ of the value of its resistance, then the fraction of the total current passing through the galvanometer is

$\dfrac{1}{(n-1)}$

$\dfrac{1}{n}$

$\dfrac{n}{(n-1)}$

$\dfrac{1}{1-n}$

MHT CET 2026 15th April Morning Shift

MCQ (Single Correct Answer)

-0

A circular coil of 'N' turns and diameter 'd' carries current 'I'. It is unwound and rewound to make another coil of diameter '2d', current 'I' remaining the Same. The ratio of magnetic moments of the new coil to the original coil is

$2:1$

$1:1$

$1:2$

$4:1$

MHT CET 2026 15th April Morning Shift

MCQ (Single Correct Answer)

-0

Lorentz magnetic force is acting on a particle of charge $q$ moving with velocity $\vec{V}$ in magnetic field $\vec{B}$. The work done by this force on the charged particle is

zero

$\vec{V} \times \vec{B}$

$\vec{V} \times \vec{V}$

$q(\vec{V} \times \vec{B})$

MHT CET 2025 5th May Evening Shift

MCQ (Single Correct Answer)

-0

A wire of length ' $L$ ' carries a current ' $I$ '. If the wire is turned into a square coil of single turn, the maximum magnitude of the torque in a given magnetic field $(\overrightarrow{\mathrm{B}})$ is

$\frac{\mathrm{IBL}}{16}$

$\frac{\mathrm{IBL}}{8}$

$\frac{\mathrm{IBL}^2}{8}$

$\frac{\mathrm{IBL}^2}{16}$

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