When a coil is placed in a constant external magnetic field directed perpendicular to the plane of the coil, which of the following actions does not induce an emf in the coil?*1 pointCollapsing the coil.Changing the strength of the magnetic field.Moving the coil through the field without changing its orientation with respect to the field.Rotating the coil.

When a loop of wire is rotated between the poles of a magnet, the induced emf can be generated. Which of following DOES NOT influence the induced emf ?(1 Point)the magnetic field of pole.the length of wire.the cross sectional area of the loop.the rotating speed of the loop.

An increasing magnetic field is 45.0° clockwise from the vertical axis, and increases from 0.500 T to 0.6 T in 4.30 s. There is a coil at rest whose axis is along the vertical and it has 100 turns and a diameter of 6.00 cm. What is the induced emf?

electromagnetic induction i.e currents can be induced in coils (Select the best)A.Only if the coil movesB.Only if the coil moves and magnet also moves in the same directionC.if relative motion of coil and magnet is present.D.Only if the magnet moves

A rectangular, a square, a circular and an elliptical loop, all in the(x-y) plane, are moving out of a uniform magnetic field with aconstant velocity 𝑣⃗ = v𝚤̂.The magnetic field is directed along thenegative z-axis direction. The induced emf, during the passage ofthese loops, out of the field region, will not remain constant for(i) any of the four loops(ii) the circular and elliptical loops(iii) the rectangular, circular and elliptical loops(iv) only the elliptical loops1

A conducting loop of radius 10π√cm is placed perpendicular to a uniform magnetic field of 0.5T. The magnetic field is decreased to zero in 0.5s at a steady rate. The induced emf in the circular loop at 0.25s is: