NANDAX · LEARN WITH SIMULATIONS
Ohm’s Law Circuit
Experiment worksheet · NCERT & competitive learning
Name: _______________________Class: __________Date: __________
Learning objective
Verify V = IR and compare electrical power at different settings.
Investigation procedure
- Set V = 6 V and R = 12 Ω. Compute current before reading the meter.
- Double the voltage while leaving resistance unchanged.
- Restore V and halve the resistance. What happens to electric power?
Observation and reasoning
1. What is the current at 12 V across a 6 Ω resistor?
2. At fixed resistance, how does power change when voltage doubles?
3. Is this model valid for a temperature-dependent filament lamp?
Teacher answer key
1. I = V/R = 12/6 = 2 A.
2. Power becomes four times as large because P = V²/R.
3. Not exactly. A filament’s resistance changes with temperature and its I–V curve is not perfectly linear.