MHT CET 2024 4th May Evening Shift | Moving Charges and Magnetism Question 27 | Physics

A particle carrying a charge equal to 100 times the charge on an electron is rotating one rotation per second in a circular path of radius 0.8 m . The value of magnetic field produced at the centre will be ( $\mu_0=$ permeability of vacuum)

$\frac{10^{-7}}{\mu_0}$

$10^{-17} \mu_0$

$10^{-6} \mu_0$

$10^{-7} \mu_0$

MHT CET 2024 4th May Morning Shift

MCQ (Single Correct Answer)

-0

A charged particle of charge ' $q$ ' is accelerated by a potential difference ' $V$ ' enters a region of uniform magnetic field ' $B$ ' at right angles to the direction of field. The charged particle completes semicircle of radius ' $r$ ' inside magnetic field. The mass of the charged particle is

$\frac{\mathrm{r}^2 q B^2}{2 \mathrm{~V}}$

$\frac{r^2 q^2 B^2}{\sqrt{2} V}$

$\frac{\mathrm{qrB}}{2 \mathrm{~V}}$

$\frac{\mathrm{q}^2 \mathrm{r}^2 \mathrm{~B}^2}{\mathrm{~V}}$

MHT CET 2024 4th May Morning Shift

MCQ (Single Correct Answer)

-0

A charged particle is moving in a uniform magnetic field in a circular path with radius ' $R$ '. When the energy of the particle is doubled, then the new radius will be

$\frac{\mathrm{R}}{\sqrt{2}}$

$ 2 R$

$\frac{\mathrm{R}}{2}$

$\sqrt{2} R$

MHT CET 2024 4th May Morning Shift

MCQ (Single Correct Answer)

-0

A massless square loop of wire of resistance ' $R$ ' supporting a mass ' M ' hangs vertically with one of its sides in a uniform magnetic field ' B ' directed outwards in the shaded region. A d.c. voltage ' V ' is applied to the loop. For what value of ' $V$ ' the magnetic force will exactly balance the weight of the supporting mass ' M '? (side of loop = L, $\mathrm{g}=$ acceleration due to gravity)

MHT CET 2024 4th May Morning Shift Physics - Moving Charges and Magnetism Question 28 English

$\frac{\mathrm{Mg}}{\mathrm{LBR}}$

$\frac{\mathrm{LB}}{\mathrm{MgR}}$

$\frac{\mathrm{MgR}}{\mathrm{LB}}$

$\frac{\mathrm{LR}}{\mathrm{MgB}}$

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