Chapter 11 Electricity Questions-02
QUESTIONS
1. Name a device that helps to maintain a potential difference across a conductor.
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Answer
Any source of electricity like battery, cell, power supply, etc. helps to maintain a potential difference across a conductor.
2. What is meant by saying that the potential difference between two points is $1 V$ ?
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Answer
If $1 J$ of work is required to move a charge of amount $1 C$ from one point to another, then it is said that the potential difference between the two points is $1 V$.
3. How much energy is given to each coulomb of charge passing through a $6 V$ battery?
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Answer
The energy given to each coulomb of charge is equal to the amount of work which is done in moving it.
Now we know that,
Potential difference $=$ Work Done/Charge
$\therefore$ Work done $=$ Potential difference $\times$ charge
Where, Charge $=1 C$ and Potential difference $=6 V$
$\therefore$ Work done $=6 \times 1$
$=6$ Joule.
