This circuit shows a potential divider. The battery has negligible internal resistance and the voltmeter has infinite
Question:
This circuit shows a potential divider. The battery has negligible internal resistance and the voltmeter has infinite resistance.
a. State and explain how the reading on the voltmeter will change when the resistance of the variable resistor is increased.
b. Resistor R2 has a resistance of 470 Ω. Calculate the value of the variable resistor when the reading on the voltmeter is 2.0 V.
c. The voltmeter is now replaced with one of resistance 2 kΩ. Calculate the reading on this voltmeter.
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a For two resistors connected in series the voltage across each resistor can be obtained using poten...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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