A 95 turn square wire coil of area 0.040 m2 rotates about a vertical axis at 1730 rpm, as indicated in Figure P20.30 {attached}. The horizontal component of the Earth's magnetic field at the location of the loop is 2.0 10-5 T. Calculate the maximum emf induced in the coil by the Earth's field. (answer in V)

Which of the following cases will NOT induce an EMF in a coil of wire? (True/False problem)
1) By increasing the magnetic field in which a wire coil sits.
2) By rotating a coil of wire counter-clockwise in a constant magnetic field.
3) By pushing a bar magnet into a coil of wire.
4) By decreasing the area of a coil

A coil of 500 turns is wound on a wooden ring having a mean diameter of 8 cm and a cross sectional area of 1.5 cm^2. Assuming relative permeability of wood is 1, calculate the self-inductance of the coil and the emf induced in it when the direction of a DC current of 5A flowing in it is reversed in 0.2 sec?

One of the coils we use in class has 157 turns in 18 cm and a cross section area of 5.0 * 10^-3 m^2. (a) What is its inductance L, and (b) What self-induced emf will it produce at 100 ms if the current through it changes as shown in this graph?

Please help answer the following problems. Provide step by step calculations.
A toroidal solenoid has 550 turns, cross- sectional area 6.7 square cm, and a mean radius of 4.8 cm.
A) Calculate the coil's self-inductance.
B) If the current decreases uniformly from 5A to 2A in 3ms, calculate the self induced emf in the co

A coil of wire with 40 turns is held stationary between the poles of an electromagnet. The field in the electromagnet is increased from 0 to 0.75T in a time of 225 seconds. What is the magnitude of the induced EMF in the coil if the angle that the plane of the coil makes with the field is 30 degrees?

A generator is constructed by rotating a coil of N turns in a magnetic field B at a frequency f. The internal resistance of the coil is R and the cross sectional area of the coil is A. (True/False)
(1)The average induced EMF doubles if the area A is doubled.
(2)The average induced EMF doubles if the resistance R is double

A 25-turn circular coil of wire has diameter 1.00 m. It is placed with its axis along the direction of the Earth's magnetic field of 50.0 μT, and then in 0.200 s it is flipped 180°. An average emf of what magnitude is generated in the coil?

The plane of a rectangular coil of dimension 5 cm by 8 cm is perpendicular to the direction of a magnetic field B. The coil has 29.7 turns and a total resistance of 12.8 Ohms.
At what rate must the magnitude of B change in order to induce a current of .227 A in the windings of the coil in units of T/s?

A circular loop in the plane of the screen lies in a 0.89 T magnetic field pointing into the screen. The loop's diameter changes from 19.0 cm to 6.0 cm in 0.50 s.
What is the magnitude of the average induced emf?
mV
If the coil resistance is 2.5 , what is the average induced current?
mA