should the resistance of an ammetre be low or high.Give reason
Answers
The resistance of an ammeter should be Low
Reason:
1. Ammeter is used to measure the current in a circuit and it should always be connected in series.
2. Resistance means the obstruction caused to the movements of electrons.
3. If resistance is more, current will be less.
4. So, if ammeter has a high resistance than the current measured will be quite less as compared to actual current which is undesirable.
5. If a ammeter has zero resistance , then we will get exact current in the circuit.
6. But such thing is not possible as every material in this world has some internal resistance.
Conclusion:
The resistance of an ammeter should be Low
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Answer:
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Explanation:
The resistance of an ammeter should be low. An ammeter has to be connected in series with the circuit to measure current. In case, its resistance is not very low, its inclusion in the circuit will reduce the current to be measured. In fact, an ideal ammeter is one which has zero resistance.