Ohm's law: V–I characteristics
Build a V–I characteristic with a real voltmeter and ammeter. Compare ohmic wires with a heating bulb filament and a diode, and see resistivity ρL/A and temperature dependence at work.
About this experiment
| Subject | Physics |
|---|---|
| Class | 12 |
| Chapter | 3. Current Electricity |
| NCERT section | 3.4, 3.5 |
| Level | NCERT level |
| Time | about 14 minutes |
| Access | Free, no card needed |
What you do in the lab
Change the controls and watch the physics behave in real time in 3D. Live readouts and graphs show the numbers behind it, and the Learn tab has the theory, procedure, observations and viva questions. Works on a phone or a laptop, in English and Hindi.
Topics: Ohm's law · resistivity · V-I · ammeter · voltmeter
More from this chapter
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- Drift velocity of electrons in a conductor
- Galvanometer: resistance and figure of merit (half-deflection)
- Kirchhoff's laws on circuits
- Metre bridge and Wheatstone bridge
- Potentiometer: emf comparison, internal resistance
- Resistivity and temperature dependence of a wire
- Resistor colour code and series/parallel combinations