In a potentiometer wire experiment the emf of a battery in the primary circuit is 20volt and its internal resistance is 5 Ω Ω . There is a resistance box (in series with the battery and the potentiometer wire) whose resistance can be varied from 120 Ω Ω to 170 Ω Ω . Resistance of the potentiometer wire is 75 Ω Ω . The following potential differences can be measured using this potentiometer
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(a, b, c)
i max = 
amp
V max = i max R 75 = 
× 75 = 7.5 V
range of potentiometer 0 to 7.5 V
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