The magnetic flux through each turn of a 190-turn coil is given by g = 7.25 x 10-3 sin(wt), where w is the angular speed of the coil and g is in webers. At one instant, the coil is observed to be rotating at a rate of 9.40 x 102 rev/min. (Assume that t is in seconds.) (a) What is the induced emf in the coil as a function of time for this angular speed? (Use the following as necessary: t. Do not use other variables, substitute numeric values. Assume that & is in volts. Do not include units in your answer.) E = (b) What is the maximum induced emf in the coil for this angular speed? V

A 40-loop circular coil has a radius of 10.0 cm. It is placed in a magnetic field so that the field lines from a parmanent magnet (B) are normal to the area of the coil. If the magnet is brought toward the loop so its magnetic field varies from 0.2 T to 0.70 T in 2 microsecond, the induced emf through each coil would be 3.95 x 105 v 87.9 x 104 V 2.80 MV O 7.85 kV

The magnetic flux through each turn of a 180-turn coil is given by g = 9.00 × 10-³ sin(wt), where w is the angular speed of the coil and B is in webers. At one instant, the coil is observed to be rotating at a rate of 9.00 x 10² rev/min. (Assume that t is in seconds.) (a) What is the induced emf in the coil as a function of time for this angular speed? (Use the following as necessary: t. Do not use other variables, substitute numeric values. Assume that is in volts. Do not include units in your answer.) E = (b) What is the maximum induced emf in the coil for this angular speed?

A 280-turn rectangular coil with area, A = 0.22 m², and resistance, R = 772, is rotating at a constant rate of 66 rpm in a uniform magnetic field, B = 0.473 T. (a) What is the angular speed of the rotating coil? w = 6.908 (b) Calculate the frequency, f, and period, T, of the coil's rotation. f = 1.1 Emax Emin = Induced EMF (2 of 2) (c) Find the maximum, minimum and rms-average emf induced during each rotation. Erms II 6.91 rads/s max Pavg 1.1 Hz and T = 0.909 = V V V (d) Calculate the maximum and average power generated during each cycle. P₁ 0.909 sec W W

A square coil with a side length of 13.0 cm and 35 turns is positioned in a region with a horizontally directed, spatially uniform magnetic field of 77.0 mT and set to rotate about a vertical axis with an angular speed of 1.20 ✕ 102 rev/min. (a) What is the maximum emf induced in the spinning coil by this field? V(b) What is the angle between the plane of the coil and the direction of the field when the maximum induced emf occurs? (Enter the angle with the smallest possible magnitude.) °

A 30-turn circular coil of radius 4.00 cm and resistance 1.000 is placed in a magnetic field directed perpendicular to the plane of the coil. The magnitude of the magnetic field varies in time according to the expression B = 0.010 Ot+ 0.040 Of, where B is in teslas and tis in seconds. Calculate the induced emf in the coil at t = 5.00 s.

A 40-loop circular coil has a radius of 10.0 cm. It is placed in a magnetic field so that the field lines from a parmanent magnet (B) are normal to the area of the coil. If the magnet is brought toward the loop so its magnetic field varies from 0.2 T to 0.70 T in 2 microsecond, the induced emf through each coil would be Group of answer choices 3.95 x 105 V 87.9 x 104 V 2.80 MV 7.85 kV