how is ammeter and voltmeter connected in a circuit and why ?

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Solution

A voltmeter is used to measure the potential difference across two point in a circuit. Since, in parallel connection the voltage in the branches remains same, and also the resistance of the voltmeter is very high due to which a very small current flow through the voltmeter. So, a voltmeter is connected in parallel to measure the voltage.
An ammeter is used to measure the current flowing through a component/circuit. Since, current remains same in series connection and also the resistance of an ammeter is very small due to which it doesn’t affect the current to be measured. So, an ammeter is connected in series to measure current.

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Q. Assertion : Out of galvanometer, ammeter and voltmeter, resistance of ammeter is lowest and resistance of voltmeter is highest
Reason : An ammeter is connected in series and a voltmeter is connected in parallel, in a circuit

Q. To study the dependence of current (I) on the potential difference (V) across a resistor, the correct way of connecting the ammeter and voltmeter in the circuit is:
(1) ammeter and voltmeter both are connected in series
(2) ammeter is connected in parallel and voltmeter in series
(3) ammeter is connected in series and voltmeter in parallel
(4) ammeter and voltmeter both are connected in parallel

Explain the working of ammeter and voltmeter. What is ammeter connected in series and why voltmeter in parallel?

Which statement is /are correct?
1. An ammeter is connected in series in a circuit and a voltmeter is connected in parallel.
2. An ammeter has a high resistance.
3. A voltmeter has a low resistance.

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