Question

the instrument shown in the figure is used to measure of the following the potential difference between the two ends of the conducting wire the potential difference between two ends of the conducting wire ​

Answer 1

Wire is wired this us wire

Answer 2

Instrument used to measure the potential difference between the two ends of a conducting wire is a VOLTMETER.

What is a VOLTMETER?

• VOLTMETER is basically a converted galvanometer with a large resistance.

• This device is connected in parallel to the wire/resistance whose potential difference we want to measure.

• Due to its high resistance, it takes negligible amount of current through itself, hence useful to measure the potential difference.

• Once circuit is connected, the needle in the voltmeter undergoes deflection and the potential difference across the wire or resistance can be seen from scale.

• However, Potentiometer is the instrument of choice over voltmeter while measurement of Potential Difference.

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