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Chapter 21: Q25CQ (page 772)

Suppose you are using a multimeter (one designed to measure a range of voltages, currents, and resistances) to measure current in a circuit and you inadvertently leave it in a voltmeter mode. What effect will the meter have on the circuit? What would happen if you were measuring voltage but accidentally put the meter in the ammeter mode?

Short Answer

Expert verified

The voltmeter has a large resistance. So, if we use the multimeter, in voltmeter mode, to measure the current, we will get inaccurate readings.

Step by step solution

01

Multimeter

A measuring device that has the ability to measure multiple properties of an electric circuit, is known as a multimeter. It can measure the potential difference, current, resistance, etc.

02

Explanation of what would happen if while measuring voltage but accidentally put the meter in the ammeter mode?

In the Voltmeter mode, the meter has huge resistance. When it is connected to measure the current then it increases the circuit resistance which reduces the actual current in the ammeter mode. Thus, the measurements will not be accurate.

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