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NEET UG PHYSICS MCQ: MAGNETIC EFFECT OF CURRENT

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A current carrying coil is placed in a uniform magnetic field of induction

B

. If the current in the coil is

I

, it has

N

turns, and

A

is the face area of the coil and normal to the surface makes an angle

\theta

with

B

, then the torque experienced by the coil is

View answer and explanation

Correct option: C

\mathrm{B} \mathrm{N} \mathrm{A} \mathrm{I} \sin \theta

Option C is correct because the torque on a current-carrying coil in a magnetic field is given by the product of the magnetic field strength, number of turns, area of the coil, current, and the sine of the angle between the normal to the coil and the magnetic field.

More Questions from MAGNETIC EFFECT OF CURRENT

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Which of the following statements is not true A current loop in a magnetic field Given below are two statements:
Statement (I): When currents vary with time, Newton’s third law is valid only if momentum carried by the electromagnetic field is taken into account.
Statement (II): Ampere's circuital law does not depend on Biot-Savart’s law.
In the light of the above statements, choose the correct answer from the options given below: The magnetic field due to current carrying a circular loop of radius

5 \mathrm{~cm}

at a point on the axis at a distance of

12 \mathrm{~cm}

from the center is

250 \mu \mathrm{T}

. The magnetic field at the center of the loop is The magnetic field

d \vec{B}

due to a small current element

d \vec{l}

\vec{r}

and element carrying current

i

is Three long straight conductors carry currents 4A, 2A and 3A into the plane of paper. A circular path is imagined to be enclosing these currents. The value of

\oint {\overrightarrow B .\overrightarrow {dl} }