Kirchhoff's Laws & Measuring Instruments
Correct set up to verify Ohm's law is:
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Answer: (a)
- For Ohm's law, the ammeter must be in series with the cell in the main line and the voltmeter must be across the resistor.
- In (a) the ammeter is in series with the cell and the voltmeter is directly across the resistor.
- In (b) the voltmeter is across the cell only; in (c) and (d) a meter is placed wrongly (voltmeter in series or ammeter in a side branch).
- So the answer is (a).