A car battery has an e.m.f. of 12 V and an internal resistance of 0.04 . The
Question:
A car battery has an e.m.f. of 12 V and an internal resistance of 0.04 Ω. The starter motor draws a current of 100 A.
a. Calculate the terminal p.d. of the battery when the starter motor is in operation.
b. Each headlamp is rated as ‘12 V, 36 W’. Calculate the resistance of a headlamp.
c. To what value will the power output of each headlamp decrease when the starter motor is in operation? (Assume that the resistance of the headlamp remains constant.)
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a To calculate the terminal pd of the battery when the starter motor is in operation we c...View the full answer
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Related Book For 
Cambridge International AS And A Level Physics Coursebook
ISBN: 9781108859035
3rd Edition
Authors: David Sang, Graham Jones, Gurinder Chadha, Richard Woodside
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