alleryThe magnetic force on a charge q moving with velocity v in magnetic field B is:
AF = q v · B
BF = q B
CF = q v × B
DF = q (v + B)
Answer & Solution
Correct answer: C. F = q v × B
1. Lorentz magnetic force: F = q v × B (cross product).
2. Magnitude: F = q v B sinθ. Maximum at θ = 90°, zero when v ∥ B.
3. Direction by right-hand rule. Force is ⊥ to both v and B.
_Source: syllabus Physics Ch 4 §4.2 Magnetic Force_
Keep practising Electromagnetism
Browse all Electromagnetism questions for NEET UG, or explore more Physics topics.
Related questions
For a charge distribution with volume density ρ, the total charge Q equalsThe electric flux through a closed surface enclosing a charge of +5 μC is (ε₀ = 8.85 × 10⁻The electric field on the axial line of a short electric dipole at distance r isAn electric dipole consists of two equal and opposite point charges ±q separated by distanGauss's law states that the total electric flux through a closed surface equalsThe electric field just outside a uniformly charged infinite plane with surface charge denThe electric field of an infinite line of charge with linear charge density λ at perpendicThe electric field at distance r from an isolated point charge q is