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Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismMagnetic ForceEasy2 minPYQ_2014

PhysicsEasysingle choice

A long straight wire carries 10 A d.c. current an electron travels perpendicular to the plane of this wire at a distance $0.1 m$ with velocity $5.0 \times 1 0^{6} m s^{- 1}$ . Force acting on the electron due to current in wire is

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Answer:

Solution:

Force on the electron $F = - e (v \times B)$ . As electron is travelling in a plane perpendicular to the plane of wire, so angle $θ$ between $v$ and $B$ is either $0^{\circ}$ or $18 0^{\circ}$ and $sin 0^{\circ}$ or $sin 18 0^{\circ} = 0$ .

Stream:AIIMSSubject:PhysicsTopic:MagnetismSubtopic:Magnetic Force

⏱ 2mℹ️ Source: PYQ_2014

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