Electromotive Force (e.m.f.) and Potential Difference (p.d.)
ScienceSubject
8 minEstimated read
क्रियाकलाप 11.2
Comparing e.m.f. and p.d.
ObjectiveTo compare e.m.f. and p.d.
Materials
Voltmeter
Crocodile clips
Connecting wire
Dry cell
Bulb
Method
Build the first circuit with only the cell, a switch and the voltmeter, the voltmeter joined directly across the cell. Write the voltmeter reading in the table.
Build the second circuit with the cell, a switch and the bulb, and join the voltmeter in parallel with the bulb. Switch on and write the voltmeter reading in the table.
Circuit
Observation
Circuit
Observation
Conclusion
Cell and switch, voltmeter across the cell
Voltmeter reading = ..... volt
Cell, switch and bulb, voltmeter in parallel with the bulb
Voltmeter reading = ..... volt
Discussion
Compare the voltmeter readings in the two circuits and write your conclusion.
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