Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismMagnetic torque & energyEasy2 minPYQ_2020

PhysicsEasysingle choice

A loop $PQR$ carries a current $i = 2 A$ as shown in the figure. A uniform magnetic field $B = 2 T$ exists in space parallel to the plane of the loop. The magnetic torque on the loop is

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Answer:

Solution:

Given,
$i = 2 A$ , $B = 2 T$

Area of the loop is $A = \frac{1}{2} \times B a s e \times H e i g h t = 2 m^{2}$

$τ = i A B \sin θ$ [Here, $θ = 90 °$ ]

$τ = 2 \times 2 \times 2 \times \sin 90 ° = 2 N m$

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

⏱ 2mℹ️ Source: PYQ_2020

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