A coil is connected in series with a 7.97 k resistor. An ideal 48.4 V battery is applied across the two devices, and the current reaches a value of 1.95 mA after 5.36 ms. (a) Find the inductance of the coil. (b) How much energy is stored in the coil at this same moment?
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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?An inductor consists of 100 turns of wire tightly wound about an insulating core. It is attached to a power supply and when the current through it is increased from 0 to 5 A in 3, s an induced emf of 5 V is measured. Find the inductance of this device and the magnetic flux and the energy stored in the magnetic field when the current is held steady at 5 A.A coil is connected in series with a 9.66 k resistor. An ideal 56.0 V battery is applied across the two devices, and the current reaches a value of 2.49 mA after 4.99 ms. (a) Find the inductance of the coil. (b) How much energy is stored in the coil at this same moment? (a) Number (b) Number Units Units
- Two coils are placed close to each other and have a mutual inductance of 150 µH. The current through one coil is given by, I(t)=5sin(1000t). Estimate the time when the emf will be maximum on the second coil.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 IN(a) A coil of conducting wire carries a current of i(t) = 16.0 sin(1.20 x 10³t), where i is in amperes and t is in seconds. A second coil is placed in close proximity to the first, and the mutual inductance of the coils is 160 pH. What is the peak emf (in V) in the second coil? V (b) What If? Which would lead to a larger peak emf in the second coil, a doubling of the mutual inductance or a doubling of the frequency with which the current in the first coil changes? O Doubling the mutual inductance would lead to a larger peak emf. O Doubling the frequency with which the current in the first coil changes would lead to a larger peak emf. O The two changes would each have the same effect.
- At t = 0, an emf of 420 V is applied to a coil that has an inductance of 0.780 H and a resistance of 30.0 2. (a) Find the energy stored in the magnetic field when the current reaches half its maximum value. (b) After the emf is connected, how long does it take the current to reach this value? msIf two coils placed next to one another have a mutual inductance of 5.06 mH, what voltage is induced in one when the 2.00 A current in the other is switched off in 29.5 ms?A coil has an inductance of 1.5 H and a resistance of 0.6 ohm. If the coil is suddenly connected across a 12-V battery, find the time required for the current to rise to 0.63 of its final value.