A coil is placed in magnetic field such that plane of coil is perpendicular to the direction of magnetic field. The magnetic flux through a coil can be changed: A. By changing the magnitude of the mag

Question

A coil is placed in magnetic field such that plane of coil is perpendicular to the direction of magnetic field. The magnetic flux through a coil can be changed:

A. By changing the magnitude of the magnetic field within the coil.

B. By changing the area of coil within the magnetic field.

C. By changing the angle between the direction of magnetic field and the plane of the coil.

D. By reversing the magnetic field direction abruptly without changing its magnitude.

Choose the most appropriate answer from the options given below:

TestHub · Accepted Answer

Magnetic flux through a coil is given by $ϕ = \vec{B} . \vec{A}$ $= B A \cos θ$ , where, $B$ is magnetic field, $A$ is area of coil and $θ$ is the angle between $B$ and $A$ .

Thus, from above expression, we can say that magnetic flux can be changed by changing magnetic field, area of coil, change the angle between $B$ and $A$ .

Hence, correct options are A, B and C.

Physics - EMI/AC Question with Solution | TestHub

Options:

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