A wire loop of radius 0.33 m lies so that an external magnetic field of magnitude 0.35 Tis perpendicular to the loop. The field reverses its direction, and its magnitude changes to 0.16 T in 1.4 s. Find the magnitude of the average induced emf in the loop during this time.

A coil consists of 25 loops of wire and has a diameter of 10 cm. Its resistance is 0.1Ω. At t=0 it lies perpendicular to a 0.5 T magnetic field (that is to say, the normal to the plane of the coil is parallel to the field direction) and the coil begins to rotate at 30 rad/s. Find the emf of induced in the coil and the current that flows as a function of time.

A 2.00×10-2 Ω square wire loop 40.0 cm on a side has its plane normal to a uniform magnetic field of magnitude B = 3.0 T. If you pull two opposite sides of the loop away from each other, the other two sides automatically draw toward each other, reducing the area enclosed by the loop.If the area is reduced to zero in a time of 0.30 s what is the average emf during this time interval?  What is the average current during this time interval?

A coil of 15 loops of wire is laying on the table. It experiences an increasing magnetic field going into the table. If the magnetic field goes from 0.15 T to 0.85 Tin one-third of a second and the coil has a diameter of 6 centimeters, determine the magnitude of the induced EMF and the direction of the induced current

A coil of wire has an area of 0.02m² and consists of 50 turns. At t = 0 the coil is orientated so the normal to its surface has direction (8 = 0°) to a constant magnetic field of magnitude 0.18T. The coil is then rotated through an angle of (8 = 30°) in a time of 0.10s. By using the expression given below determine the average induced EMF.

A circular coil (830 turns, radius = 0.048 m) is rotating in a uniform magnetic field. At t=0 s, the normal to the coil is perpendicular to the magnetic field. At t = 0.021 s, the normal makes an angle of 45° with the field because the coil has made one-eighth of a revolution. An average emf of magnitude 0.081 V is induced in the coil. Find the magnitude of the magnetic field at the location of the coil. Number Units

A coil of area A = 0.25 m2 is rotating with angular speed ω = 380 rad/s with the axis of rotation perpendicular to a B = 0.55 T magnetic field. The coil has N = 550 turns.   Part (a)  Express the maximum emf induced in the loop, ε0, in terms of A, ω, B, and N.  Part (b)  Calculate the numerical value of ε0 in V.

A rectangular loop of wire with dimensions 0.1 m by 0.2 m is rotated with an angular speed of60 rad/s about an axis perpendicular to a uniform magnetic field of 0.3 T. Calculate themaximum induced EMF in the loop.

A square coil of wire of side 2.85 cm is placed in a uniform magnetic field of magnitude 2.25 T directed into the page as in the figure shown below. The coil has 38.0 turns and a resistance of 0.780 Ω. If the coil is rotated through an angle of 90.0° about the horizontal axis shown in 0.335 s, find the following.   (a) the magnitude of the average emf induced in the coil during this rotation   (b) the average current induced in the coil during this rotation

A 227-turn circular coil of radius 24 cm is perpendicular to a uniform magnetic field of 0.55 T. During a 0.75 s time interval, this field increases to 1.7 T. If the resistance of the coil is 11.5 ohm, calculate the average emf and current that flows in the coil during this interval. The average emf, Emf = 47.23 V Units V The average current, i = 5.5 x Units A