Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Chapter 32, Problem 5PLA
To determine
The factor to which a known emf and an unknown emf are compared to the voltage drop across the potentiometer.
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An ammeter with resistance 'RA' is connected in series with resistance R=100 ohms. The applied voltage V= 200V. Determine the error (E) & percentage error (%E) in the current measurement due to loading effect of ammeter when- (i) RA =0.2(Ohms) (ii) RA = 20.0 (Ohms).
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A single slide wire is used for the measurement of current in a circuit. The voltage drop across a standard resistance of 1.0 ohm is balanced at 70 cm. What is the magnitude of the current, if the standard cell having an emf of 1.45 volts is balanced at 50 cm ?
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Physics Laboratory Manual
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