G482 Electrons, Waves & Photons definitions

1. The ratio of the product of resistance and cross-sectional area of a component and its length. (11)
4. Two waves with a constant phase relationship. (9)
5. Unit of resistance. 1 Ohm = 1VA-1 (3, 3)

2. The electric current through a conductor is proportional to the potential difference across it, provided physical conditions, such as temperature remain constant. (4, 3)
3. Unit of potential difference (1 volt = 1JC-1) (4)
6. The time taken for one complete pattern of oscillation. (6)
7. A quantum of light. (6)
8. A point that always has zero amplitude along a stationary wave caused by destructive interference. (5)
9. The maximum displacement of a wave from its mean (or rest) position. (9)
10. Whole number multiples of the fundamental frequency of a stationary wave. (9)

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