A) connecting both voltmeter and an ammeter min parallel to \[{{R}_{1}}\]
B) connecting both voltmeter in series with \[{{R}_{1}}\]and voltmeter in parallel to both \[{{R}_{1}}\]and \[{{R}_{2}}\]
C) connecting ammeter in parallel to \[{{R}_{1}}\] and voltmeter in series with \[{{R}_{1}}\]
D) connecting voltmeter in parallel to \[{{R}_{1}}\] and ammeter in series with \[{{R}_{1}}\]
Correct Answer: D
Solution :
(Misprint: read voltmeter in options , and as voltmeter.) For measuring the heat produced in a resistor, we must know the voltage drop across it and the current through the same resistor. Voltmeter is always connected in parallel and ammeter always in series.
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