Question

why a metre is always connected in series And not in parallel And why voltmetre is always connected in parallel and not in series ​

Answer 1

Answer:

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Explanation:

Voltmeter is used to measure potential difference.It is always connected in parallel across the points where the potential difference is to measured so one end of the voltmeter is connected to the point A of a resistance AB and the other end to the point B,and also it has a high resistance so that it takes a negligible .

Answer 2

an ammeter is used romeasure the current of a circuit, the ammeter is connected in series in the circuit so that the current to be measured must pass through it. Since, the resistance of ammeter is low, so its inclusion in series in the circuit does not change the resistance and hence the main current in the circuit.