An ideal ammeter has

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Hence, An ideal voltmeter have infinite resistance, and an ideal ammeter has no resistance for accurate measurement of potential difference and current. Byju's Answer. Why should an ideal voltmeter have infinite resistance, and an ideal ammeter has no resistance? Open in App. Step 1: Voltmeter Voltmeter is a device used to measure potential difference across two points and is connected in parallel. An ideal voltmeter should have infinite resistance because to measure the potential difference all the current should pass through the resistor and no current should pass through voltmeter for precise readings. Because for infinite resistance the flow of current is zero.

An ideal ammeter has

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In the physics lab, we use many measuring devices to measure various specifications. Some devices used in the lab are voltameter, ammeter, vernier calliper, screw gauge, telescopes and many more. Electricity is measured using devices like ammeter and voltameter. In this article, let us understand and learn about the ammeter and its specification. In the 19th century, the ammeter with the ability of accurate measurements, which could be mounted in any position was invented. Ammeter is a device used to measure either alternating or direct current. We know that ampere is the unit of current. To measure the current, generally the ammeter is connected in series with the circuit.

An ideal ammeter has

An instrument used to measure currents is called an ammeter. To measure the current in a wire, you usually have to break or cut the wire and insert the ammeter so that the current to be measured passes through the meter. An ammeter always measures the current passing through it. An ideal ammeter would have zero resistance, so including it in a branch of a circuit would not affect the current in that branch.

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Electrical currents are then measured in the form of amperes, hence the name, "ammeter". The term "ammeter" is sometimes used incorrectly as "ampmeter".

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