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(b) The current at the terminal of a TV set is given as I(t) = 15e4t and the voltage across the device is V(t)
(b) The current at the terminal of a TV set is given as I(t) = 15e4t and the voltage across the device is V(t) = 20dIldt. Calculate the energy that is consumed by the TV in 20 seconds. [6 marks] (c) A 202 resistor is connected in series with an unknown resistance R and the two are connected across a 220V supply. The power loss in the unknown resistance R is 50W. Draw the circuit diagram and find the value of R. [8 marks]
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Electric Machinery
Authors: Charles Kingsley, Jr, Stephen D. Umans
6th Edition
71230106, 9780073660097, 73660094, 978-0071230100
