A source of emf has internal resistance r. (a) What is the terminal voltage when the source
Question:
A source of emf 
has internal resistance r.
(a) What is the terminal voltage when the source supplies a current I?
(b) The net power supplied is the terminal voltage times the current. Starting with P = IΔV, derive Eq. (18-39) for the net power supplied by the source. Interpret each of the two terms.
(c) Suppose that a battery of emf 
and internal resistance r is being recharged: another emf sends a current I through the battery in the reverse direction (from positive terminal to negative). At what rate is electric energy converted to chemical energy in the recharging battery?
(d) What is the power supplied by the recharging circuit to the battery?
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a The terminal voltage is equal to the emf minus the voltage drop across the internal resistance The ...View the full answer
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Related Book For 
College Physics With An Integrated Approach To Forces And Kinematics
ISBN: 978-1260547719
5th Edition
Authors: Alan Giambattista
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