Ohm's Law states that for a metallic conductor kept at constant temperature the current in the conductor is directly proportional to the potential difference across it.
V = I R
Ohm's Law
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Specification: OCR Physics A (H156), AS-level, 4.2.3 Resistance. Topic: Electricity.
Key terms in this lesson
- wavelength
- The minimum distance between two points on a wave that are in phase, such as from one peak to the next.
- phase difference
- The difference in phase, measured in degrees or radians, between two oscillating particles or waves.
- constructive interference
- Interference in which two waves that are in phase combine to produce a wave of increased amplitude.
- destructive interference
- Interference in which two waves that are in antiphase combine to produce a wave of reduced or zero amplitude.
More in Electricity
- Potential Difference
- Electromotive Force
- The Electron Gun
- Resistance
- Temperature and Resistance
- IV Graphs
- Diodes
- Resistivity
All 30 lessons in Electricity · All OCR AS-level Physics topics