Lorentz magnetic force is acting on a particle of charge q moving with velocity V in a magnetic field B. The work done by this force on the charged particle is (a) zero (b) one (c) infinity (d) qBsin θ

Answer: (a). F = q(V × B) is always perpendicular to the displacement. W = ∫ F · ds = 0 So the answer is (a) zero.

Lorentz magnetic force is acting on a particle of charge q moving… | MHT CET 2025 (26 Apr, Shift 2)

Q15MHT CET 2025 · 26 APR · SHIFT 2Easy

Moving Charge in a Magnetic Field

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

Show answer and solution

Answer: (a)

$\vec{F} = q(\vec{V} \times \vec{B})$ is always perpendicular to the displacement.
$W = \int \vec{F} \cdot d\vec{s} = 0$
So the answer is (a) zero.

Report a mistake

More questions on Moving Charge in a Magnetic Field

Given below are two statements. One is labelled as Assertion (A) and the other is…JEE Main 2025 (24 Jan, Shift 2)
A particle of charge 1.6 and mass 16 is present in a strong magnetic field of 6.28 T. The…JEE Main 2025 (4 Apr, Shift 2)
A particle of charge q moves with a velocity V = ai in a magnetic field B = bj + ck…MHT CET 2025 (22 Apr, Shift 2)
A particle of charge q, mass m and kinetic energy E enters in magnetic field…JEE Main 2025 (7 Apr, Shift 1)
Given below are two statements: one is labelled as Assertion A and the other is labelled…JEE Main 2025 (3 Apr, Shift 2)
An electron (mass 9 × 10⁻³¹ kg and charge 1.6 × 10⁻¹⁹ C) moving with speed c/100 (c =…NEET 2025
A proton is moving undeflected in a region of crossed electric and magnetic fields at a…JEE Main 2025 (22 Jan, Shift 2)
Consider a long thin conducting wire carrying a uniform current I. A particle having mass…JEE Main 2025 (28 Jan, Shift 1)

Moving Charge in a Magnetic Field question from MHT CET 2025 (26 Apr, Shift 2)

More questions on Moving Charge in a Magnetic Field