Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 28, Problem 68P
To determine
The time at which rate of energy dissipated is equal to the magnetic energy stored
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A series LR circuit contains an emf source of 14 V having no internal resistance, a resistor, a 34H inductor having no appreciable resistance, and a switch. If the emf across the inductor is 80% of its maximum value after 4.0s after the switch is closed, calculate the resistance of the resistor.
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Chapter 28 Solutions
Physics for Scientists and Engineers
Ch. 28 - Prob. 1PCh. 28 - Prob. 2PCh. 28 - Prob. 3PCh. 28 - Prob. 4PCh. 28 - Prob. 5PCh. 28 - Prob. 6PCh. 28 - Prob. 7PCh. 28 - Prob. 8PCh. 28 - Prob. 9PCh. 28 - Prob. 10P
Ch. 28 - Prob. 11PCh. 28 - Prob. 12PCh. 28 - Prob. 13PCh. 28 - Prob. 14PCh. 28 - Prob. 15PCh. 28 - Prob. 16PCh. 28 - Prob. 17PCh. 28 - Prob. 18PCh. 28 - Prob. 19PCh. 28 - Prob. 20PCh. 28 - Prob. 21PCh. 28 - Prob. 22PCh. 28 - Prob. 23PCh. 28 - Prob. 24PCh. 28 - Prob. 25PCh. 28 - Prob. 26PCh. 28 - Prob. 27PCh. 28 - Prob. 28PCh. 28 - Prob. 29PCh. 28 - Prob. 30PCh. 28 - Prob. 31PCh. 28 - Prob. 32PCh. 28 - Prob. 33PCh. 28 - Prob. 34PCh. 28 - Prob. 35PCh. 28 - Prob. 36PCh. 28 - Prob. 37PCh. 28 - Prob. 38PCh. 28 - Prob. 39PCh. 28 - Prob. 40PCh. 28 - Prob. 41PCh. 28 - Prob. 42PCh. 28 - Prob. 43PCh. 28 - Prob. 44PCh. 28 - Prob. 45PCh. 28 - Prob. 46PCh. 28 - Prob. 47PCh. 28 - Prob. 48PCh. 28 - Prob. 49PCh. 28 - Prob. 50PCh. 28 - Prob. 51PCh. 28 - Prob. 52PCh. 28 - Prob. 53PCh. 28 - Prob. 54PCh. 28 - Prob. 55PCh. 28 - Prob. 56PCh. 28 - Prob. 57PCh. 28 - Prob. 58PCh. 28 - Prob. 59PCh. 28 - Prob. 60PCh. 28 - Prob. 61PCh. 28 - Prob. 62PCh. 28 - Prob. 63PCh. 28 - Prob. 64PCh. 28 - Prob. 65PCh. 28 - Prob. 66PCh. 28 - Prob. 67PCh. 28 - Prob. 68PCh. 28 - Prob. 69PCh. 28 - Prob. 70PCh. 28 - Prob. 71PCh. 28 - Prob. 72PCh. 28 - Prob. 73PCh. 28 - Prob. 74PCh. 28 - Prob. 75PCh. 28 - Prob. 76PCh. 28 - Prob. 77PCh. 28 - Prob. 78PCh. 28 - Prob. 79PCh. 28 - Prob. 80PCh. 28 - Prob. 81PCh. 28 - Prob. 83P
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- A coil with a self-inductance of 3.0 H carries a current that decreases at a uniform rate dl/dt = -0.050 A/s. What is the emf induced in the coil? Describe the polarity of the induced emf.arrow_forwardWhen the current in one coi1 changes at a rate of 5.6 A/s an emf of 6.3 × 10-3 is induced in a second, nearby coil. What is the mutual inductance of the two coils?arrow_forwardA steady current flows through a circuit with a large induct3ve time constant. When a switch in the circuit is opened, a large spark across the terminals of the switch. Explain.arrow_forward
- You wish to invent a sparker for lightning gas burners. A 1.5-A current from a battery runsthrough a primary coil. When the switch in this circuit is opened, the current decreases to zero in0.60 ms, thus inducing a voltage in a secondary coil that causes a spark across a 0.50 mm gap.What must the mutual inductance be between the coils if the dielectric strength of the fumesbetween the gap is 2.4 x10 ^ V/m?arrow_forwardThe current in an inductor decreases linearly from 2 mA to zero in 4 ms. Calculate the average emf induced in the inductor if the inductance is 10 mH.arrow_forwardA swith controls the current in a circuit that has large inductance. If the switch is open but near the point of contact where it would close the circuit, a spark can arc between the switch and the point. Is a spark more likely to occur while the switch is being closed to connect the circuit, or while the switch is being opened to disconnect the circuit? why?arrow_forward
- 0.2 H inductor and 146 ohm resistor are connected to a 12V battery. When will the current will reach 84% of its final value ??arrow_forwardAn induced EMF of 16 V exists in a coil when the current in the coil changes at a rate of 42 A/s. What is the self- inductance of the coil?arrow_forwardQuestion in the imagesarrow_forward
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