Two coils have mutual inductance M = 3.25 * 10^-4 H.The current i1 in the first coil increases at a uniform rate of 830 A/s.What is the magnitude of the induced emf in the second coil? Is it constant?
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Two coils have mutual inductance M = 3.25 * 10^-4 H.
The current i1 in the first coil increases at a uniform rate of 830 A/s.What is the magnitude of the induced emf in the second coil? Is it
constant?

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- A physics student observes that the current in a coil of conducting wire goes from i, = 0.200 A to i, = 1.50 A in a time interval of At = 0.350 s. Assuming the coil's inductance is L = 5.00 mH, what is the magnitude of the average induced emf (in mV) in the coil for this time interval?In the figure, R = 11.0 Ω, C = 6.82 μF, and L = 54.0 mH, and the ideal battery has emf = 32.0 V. The switch is kept in position a for a long time and then thrown to position b. What are the (a) frequency and (b) current amplitude of the resulting oscillations?An 8 cm long solenoid has 71 windings and a circular cross section of radius a=1.4 cm. The solenoid goes through the center of a circular coil of wire with 40 windings and radius b=6 cm. The current in the circular coil changes according to i(t)=4t2+4.5t. What is the mutual inductance of the coil and solenoid? What is the magnitude of the emf induced in the solenoid at t=4 s?
- Two coils have a mutual inductance M = 0.0311 H, while the first coil has self- inductance L₁ = 0.0251 H. If the current through the first coil is changing at a rate di₁/dt = 2.32 A/s and the current through the second coil is changing at a rate di2/dt = 4.09 A/s, what is the magnitude of the EMF in the first loop? V INA solenoid of length 3.70 cm and diameter 0.760 cm is wound with 272 turns per centimeter. A) If the current in the solenoid is decreasing at a rate of 38.8 A/s, what is the induced emf in one of the windings? B) If the current in the solenoid is decreasing at a rate of 38.8 A/s, what is the induced emf in the entire solenoid?Consider a 12-loop coil with a diameter of 8 cm; a north-leading bar magnet moves further away from the coil (where the bar magnet is perpendicular to the cross section of the coil, and the north pole is closest to the coil as the magnet moves away). The magnetic field value changes from 0.065 T to 0.00065 T in 1.6 s. What is the induced emf for the coil? emf = V
- A toroid of square cross section has inner radius r₁ = 0.040 m and outer radius r2 = 0.070 m. If it has N = 200 loops, calculate the total magnetic energy in the toroid if the current is i = 3.0 A. This may be done by finding the inductance, or by integrating the magnetic energy density. ○ 1.3 × 10-4 J ○ 2.0 × 10-3 J ○ 9.1 x 10-6 J ○ 6.0 × 10-4 JProblem 1. The wire is moving to the left with a linear velocity of 10 m/s as shown. Determine the magnitude and direction of the emf induced in the wire. Include a brief explanation. X X 45° Xv = 10 m/s 1=0.25 m X, X B= 02 T, into the page XE X