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How to take reading of ammeter and voltmeter? how to find the least count in ammeter and voltmeter with example ?please answer fast............................ |
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Answer» 1. CONNECT Ammeter in series and voltmeter in parallel in an electrical circuit. Then Note down the READINGS in ammeter and voltmeter. 2.Least count is the smallest VALUE that can be measured by the measuring instrument Least count FORMULA:= value measured in n divisions/n Least count of ammeter: The smallest value of current that can be measured For example:Let us calculate Least count of ammeter- 0-300mA Least count=range of ammeter divided by NUMBER of division Refer attachment 1:for ammeter picture Small divisions=30 suppose there are 30 division then, least count is =300/30=10mA Least count of Voltmeter: For example let us calculate least count of Voltmeter 0-15volts. Please refer to Attachment2 for voltmeter picture Main division 15 sundivision 30 least count=15/30 =1/2=0.5 Least count of this voltmeter is 0.5 |
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