A strong electromagnet produces a uniform magnetic field of 1.60 T over a cross-sectional area of 0.270 m2. A coil having 220 turns and a total resistance of 22.0 Ω is placed around the electromagnet. The current in the electromagnet is then smoothly reduced until it reaches zero in 20.0 ms. What is the current induced in the coil?

A circular wire coil with 25 turns and radius 1.02 cm is placed in a uniform magnetic field of strength 6.04 T, directed perpendicular to the plane of the wire loops. Over a period of 1.85 s, the magnetic field fades away to zero. What is the average induced emf (voltage) in the coil over this period of time?     0.016 V     0.035 V     0.043 V     0.027 V

A 0.300 mm diameter copper wire makes up a 85.0 turns, 7.90 cm diameter coil. There is a magnetic field parallel to the axis of the coil. If the induced current in the coil is 4.80 A, what is the rate of change of the magnetic field? 58.5 T/s 4.97×103 T/s 3.20×10-6 T/s 0.222 T/s

A fixed 17.4-cm-diameter wire coil is perpendicular to a magnetic field 0.56 T pointing up. In 0.29 s , the field is changed to 0.35 T pointing down. What is the average induced emf in the coil?

A coil with a radius of 0.10 m and 725 turns is connected to a resistor with a resistance of 1.0 k (1.0 k = 1.0 x 10³ ). A magnetic field that is perpendicular to the loop is decreased in strength from 0.70 T to 0.20 T in 0.050 s. What is the magnitude of the induced current in the coil? Give your answer in units of amps (A) with two decimal places. B R Calculate the magnitude of the magnetic force on the charge, giving your answer in units of newtons (N) with two decimal places.

A circular loop in the plane of the paper lies in a 0.60 T magnetic field pointing into the paper. The resistance of the coil is 1.55 Ω. If the loop's diameter changes from 20.5 cm to 9.00 cm in 0.40 s, what is the average induced current in milli-amps?

A fixed 11.1-cm-diameter wire coil is perpendicular to a magnetic field 0.73 T pointing up. In 0.14 s , the field is changed to 0.24 T pointing down. What is the average induced emf in the coil?

A. 0.0155 T/s B. 0.0996 T/s C. 0.228 T/s D. 0.757 T/s E. 1.52 T/s

A circular coil with radius 0.564 m has 50 turns of wire in it. The total resistance of the coil is R and it is sitting in a perpendicular magnetic field of 10 T. As the magnetic field is ramped to zero over a period of 2 s, a 5.0 A current is induced in the coil. What is R? Hig Ο 10 Ω 15 Ω 30 Ω

The armature of a small generator consists of a flat, square coil with 120 turns and sides with a length of 1.60 cm. The coil rotates in a magnetic field of 0.0750 T. What is the angular speed of the coil if the maximum emf produced is 24.0 mV?