The e.m.f. of a cell is balanced by the length of 1.812 m of potentiometer wire, in the potentiometer experiment. When a resistor of 5 ohms is connected across the cell, the balancing length is found to be 1.51 m. Find the internal resistance of the cell.

The e.m.f. of a cell is balanced by the length of 1.812 m of potentiometer wire, in the potentiometer experiment. When a resistor of 5 ohms is connected across the cell, the balancing length is found to be 1.51 m. Find the internal resistance of the cell.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter7: Parallel Circuits

Section: Chapter Questions

Problem 3PP: Using the rules for parallel circuits and Ohmslaw, solve for the missing values....

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Question

The e.m.f. of a cell is balanced by the
length of 1.812 m of potentiometer wire, in the
potentiometer experiment. When a resistor of
5 ohms is connected across the cell, the
balancing length is found to be 1.51 m. Find
the internal resistance of the cell.

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