how to take ammeter and voltmeter reading
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Reading on an ammeter:
The voltage remains the same across the circuit as it is a parallel connection. So, the current across the upper half of the circuit where the ammeter is connected is calculated as I = V/R = 12.04 (total voltage)/12(Resistance R1) = 1 A. Hence, the ammeter will read 1 A.
Reading on a voltmeter:
Check the +ve and -ve terminals of voltmeter before connecting it in the circuit. Once the circuit is connected, insert the key and check the rheostat, adjust its slider and see whether the ammeter and voltmeter readings are shown
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