Science
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Chapter 12: Electricity
Class: X
Exercise 2
Question 1
Name a device that helps to maintain a potential difference across a conductor.
Answer 1
An electric source such as power supply, cell, battery etc. helps to maintain a potential difference across a conductor.
Question 2
What is meant by saying that the potential difference between two points is 1 V?
Answer 2
The potential difference between the two points is 1 V when 1 Joule of work is required to move a charge of 1 C from one point to another.
Question 3
How much energy is given to each coulomb of charge passing through a 6 V battery?
Answer 3
Or, Work done (Energy) = Potential difference x Charge
Work done = 6 V x 1 Coulomb = 6 Joules
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