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Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismMagnetic ForceEasy2 minPYQ_2020

PhysicsEasysingle choice

Electric charge $q$ is uniformly distributed over a rod of length $l$ . The rod is placed parallel to a long wire carrying a current $i$ . The separation between the rod and the wire is $a$ . Find the force needed to move the rod along its length with a uniform velocity $v$ .

Options:

Answer:

Solution:

$F = I ℓ B = λ vLB$

$F = q vB$

$F = qv \frac{μ_{0}}{4 π} \frac{2 i}{a} = \frac{μ_{0} iqv}{2 π a}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:MagnetismSubtopic:Magnetic Force

⏱ 2mℹ️ Source: PYQ_2020

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