How to measure voltage

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The instrument used to measure voltage, difference potential or electromotive force is called voltmeter.

�	Steps for voltage measurement Connect a small light bulb to a dry cell. A voltmeter is wired in parallel with the light bulb to measure voltage across the light bulb. Connect positive terminal (+) of voltmeter to positive terminal (+) of a dry cell and connect negative terminal (-) of voltmeter to negative terminal (-) of a dry cell (see figure).
�	Safety instructions for measuring voltage;
	1.	Estimate voltage that required measuring then choose a suitable voltmeter, since each voltmeter is designed with the limit of voltage measurement.
	2.	Be sure that the connecting of positive terminal (+) and negative terminal (-) of voltmeter are correct.

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