How would the readings in the ammeter (in mA) and voltmeter (in volts) change if the 4.50 V battery was flipped so that its positive terminal was to the right?

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Physics

26 December, 01:53

How would the readings in the ammeter (in mA) and voltmeter (in volts) change if the 4.50 V battery was flipped so that its positive terminal was to the right?

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Answers (2)

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Jax Riddle · Answer 1

The readings would have the same value, but it would change the sign. It would have a minus sign (-).

Explanation:

Assuming the battery mentioned is part of some basic circuit (just a power source and some resistive elements or switches), and the ammeter and voltmeter are measuring some variable inside this circuit, then the readings would change his sign, but the absolute value will remain.

This happens because the ammeter is measuring the electron flow, and since there is a change in the reference terminal, it would "see" a change in the direction of the electron flow.

Same for the voltmeter, there is a primary reference for the electric potential (capacity to go, from one side to another from the electrons) if the reference change, the potential would be inverted.

Andreas Mann · Answer 2

There would be a negative deflection in both devices.

Explanation:

The terminals of both ammeter and voltmeter are polarised. If not connected appropriately, negative deflection can be observe which nay damage the devices. Negative deflection is the backward flow of current or voltage dur to wrong polarity connection.