The electric-power industry would like to find efficient ways to storeelectrical energy generated during low-demand hours to help meet customerrequirements during high-demand hours. Could a large inductorbe used? What inductance would be needed to store 1.00 kW . h of energyin a coil carrying a 200 A current?

The electric-power industry would like to find efficient ways to storeelectrical energy generated during low-demand hours to help meet customerrequirements during high-demand hours. Could a large inductorbe used? What inductance would be needed to store 1.00 kW . h of energyin a coil carrying a 200 A current?

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter31: Inductance

Section: Chapter Questions

Problem 4P

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Similar questions

In an oscillating LC circuit the maximum charge on the capacitor is 2.0 × 10-6 C and the maximum current through the inductor is 8.0 mA. (a) What is the period of the oscillations? (b) How much time elapses between an instant when the capacitor is uncharged and the next instant when it is fully charged?
The armature and field coils of a series-wound motor have a total resistance of 3.0 . When connected to a 120-V source and running at normal speed, the motor draws 4.0 A. (a) How large is tire back emf? (b) What current will the motor draw just after it is turned on? Can you suggest a way to avoid this large initial current?
A small, rectangular single loop of wire with dimensions 1, and a is placed, as shown in the plan of a much larger, rectangular single loop of wire. The two short sides of the larger loop axe so far from the smaller loop that their magnetic fields over the smaller fields over the smaller loop can be ignored. What is the mutual inductance of the two loops?
Check Your Understanding (a) Calculate the self-inductance of a solenoid that is tightly wound with wire of diameter 0.10 cm, has a cross-sectional area of 0.90 cm2, and is 40 cm long. (b) If the current through the solenoid decreases uniformly from 10 to 0 A in 0.10 s, what is the emf induced between the ends of the solenoid?
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Show that the self-inductance per unit length of an infinite, straight, thin wire is infinite.
An inductor is connected across the terminals of a battery. Does the current stance of the battery? Does the time required for the current to reach its final value depend on this resistance?
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Show that N m /l and el(dl/dt), which are both expressions for se1f-inductance, have the same units.
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If emf of the battery of Figure 14.12(b) is reduced by a factor of 2, by how much does the steady-state energy stored in the magnetic field of the inductor change?