If a coil of wire in a magnetic field rotates 60 degrees, it provides an emf averaging 0.19 VV. If the coil consists of 3 loops of radius 0.50 mm and the magnetic field has a strength of 9.0 mTmT, how long does it take the coil to complete its rotation? Assume the coil is initially facing perpendicular to the field.

A rectangular conducting loop has sides a = 0.065 m, sides b = 0.15 m, and resistance R = 55 Ω. It moves into a magnetic field of magnitude B = 0.81 T with speed v = 5.5 m/s. Refer to the diagram. A) Find the current, Ii, in amperes, flowing in the loop as it enters the magnetic field.  B)  Find the current, If, in amperes, in the loop as it leaves the magnetic field. It leaves at the same speed it enters.

Two moving rods of equal lengths (1.20 m) are moving as shown in the figure. The speed v1 = 1.10 m/s and the speed v2 = 2.00 m/s. If the magnetic field is uniform with a magnitude of 0.60 T, what is the magnitude of the average emf in the loop?

A 500-turn circular loop 15.0 cm in diameter is initially aligned so that its axis is parallel to the Earth's magnetic field. In 2.77 ms the coil is flipped so that its axis is perpendicular to the Earth's field. If a voltage of 0.166 V is induced in the coil, what is the value of the Earth's magnetic field?

A copper wire is 10.00 m long and has a cross-sectional area of 2.00 ✕ 10-4 m2. This wire forms a one turn loop in the shape of square and is then connected to a battery that applies a potential difference of 0.100 V. If the loop is placed in a uniform magnetic field of magnitude 0.400 T, what is the maximum torque that can act on it? The resistivity of copper is 1.7 ✕ 10-8 ·m.

A square wire loop with 1.5 m sides is perpendicular to a uniform magnetic field, with half the area of the loop in the field as shown in the figure. The loop contains an ideal battery with emf  = 20 V. If the magnitude of the field varies with time according to B = 0.055 - 0.88 t, with B in teslas and t in seconds, what are(a) the net emf in the circuit and(b) the direction of the (net) current around the loop?

A stationary square coil of area 0.1 m2 is brought over time of 2 s into the magnetic field 8.9 T with its plane perpendicular to the magnetic field. The coil has 1030 turns. Calculate the magnetic flux linkage through the coil. Give your answer in SI units.

A circular coil enclosing an area of 100 cm2 is made of 200 turns of copper wire. The wire making up the coil has resistance of 5.0 V, and the ends of the wire are connected to form a closed circuit. Initially, a 1.1-T uniform magnetic field points perpendicularly upward through the plane of the coil. The direction of the field then reverses so that the final magnetic field has a magnitude of 1.1 T and points downward through the coil. If the time required for the field to reverse directions is 0.10 s, what is the average current in the coil during that time?

A piece of copper wire has a resistance per unit length of 5.12 × 10-3/m. The wire is wound into a thin, flat coil of many turns that has a radius of 0.149 m. The ends of the wire are connected to a 12.0-V battery. Find the magnetic field strength at the center of the coil.

A piece of copper wire has a resistance per unit length of 5.40 × 10³/m. The wire is wound into a thin, flat coil of many turns that has a radius of 0.118 m. The ends of the wire are connected to a 12.0-V battery. Find the magnetic field strength at the center of the coil. Number Units