The open-circuit emf of a dry cell is 1.5 volts. When it delivers a current of 2A, its terminal voltage drops to 1.45 volts. What is the internal resistance of the battery? O 0.025 ohms O 0.023 ohms O 0.024 ohms O 0.030 ohms

The open-circuit emf of a dry cell is 1.5 volts. When it delivers a current of 2A, its terminal voltage drops to 1.45 volts. What is the internal resistance of the battery? O 0.025 ohms O 0.023 ohms O 0.024 ohms O 0.030 ohms

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter7: Symmetrical Faults

Section: Chapter Questions

Problem 7.14MCQ

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Concept explainers

KVL and KCL

KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.

Sign Convention

Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.

Question

The open-circuit emf of a dry cell is 1.5 volts. When it delivers a current of 2A, its terminal voltage drops to 1.45 volts. What is the
internal resistance of the battery?
O 0.025 ohms
O 0.023 ohms
O 0.024 ohms
O 0.030 ohms

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