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Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismMagnetic torque & energyEasy2 minPYQ_2020

PhysicsEasysingle choice

A square loop of side $a$ is placed at a distance $a$ length away from a long wire carrying a current $I_{1}$ . If the loop carries a current $I_{2}$ as shown in the figure. Then the nature of the force and its amount is

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Answer:

Solution:

From the figure it is clear that $F_{2}$ & $F_{4}$ cancel each other, but $F_{1} > F_{3}$

$F_{n e t} = F_{1} - F_{3}$

$F_{n e t} = \frac{μ_{0} I_{1} I_{2}}{2 π a} a - \frac{μ_{0} I_{1} I_{2}}{4 π a} a$

$F_{n e t} = \frac{μ_{0} I_{1} I_{2}}{4 π}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:MagnetismSubtopic:Magnetic torque & energy

⏱ 2mℹ️ Source: PYQ_2020

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