Q.The resistance of an ideal ammeter should be :

An ammeter is connected in series to measure current, so an ideal one must have zero resistance to avoid altering the current it is meant to measure.

An ammeter is always inserted in series in the circuit whose current is to be measured. If it had any resistance, its insertion would itself change the total circuit resistance and hence change the very current being measured. To measure the true, undisturbed current, an ideal ammeter must off …

Current is measured with an ammeter, connected in series.

The instrument used to measure the electric current flowing through a circuit is called an ammeter. It is always connected in series with the part of the circuit whose current is to be measured, and an ideal ammeter has zero (very low) resistance so that it does not alter the current it is measuring. (A galvanometer …

Ideal ammeter resistance = zero.

An ammeter is connected in series in a circuit to measure current. For the reading to equal the true current, the ammeter must not add any extra resistance in the branch.

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A voltmeter is connected in parallel across the component being measured (and has a very high resistance, so it draws negligible current).

A voltmeter measures the potential difference between two points, so it must be connected across (in parallel with) that part of the circuit, sharing the same two terminals as the component. It is designed with a very high resistance so that connecting it in parallel draws only a negligible current and does not appreciably …

An ammeter is the instrument used to measure electric current, matching option (g).

An ammeter is a low-resistance instrument connected in series in a circuit to measure the current flowing through that branch, directly match …

To make an ammeter behave like a voltmeter, a high resistance must be added in series with it.

An ammeter is designed to have a very low resistance so that when inserted in series in a circuit it produces a negligible voltage drop and does not appreciably change the current being measured.

A voltmeter, by contrast, is connected in parallel across the component whose potential difference is to be measured, and must draw as little current as possible from the circuit — which requires it to have a very high resistance.

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An ammeter is in series with the circuit; to avoid changing the current it must have very low (ideally zero) resistance.

An ammeter measures the current in a branch and is always connected in series with that branch. Whatever resistance the ammeter adds becomes part of the circuit and would reduce the current, giving a wrong reading.

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