Physics AS - Electrons, Waves and Photons 4.5 / 5 based on 5 ratings ? PhysicsWavesASOCR Created by: AnnaCreated on: 12-01-13 13:36 374296185 Across 1. a component that reduces its resistance when light shines on it due to photoelectric emission of electrons (9) 4. the electric current through a conductor is proportional to the potential difference across it, provided the temperature is constant (4, 3) 5. the lowest frequency of electromagnetic radiation that will result in the emission of photoelectrons from a specified metal surface (9) 6. a graph to show how the electric current through a component varies with the potential difference across it (1, 1, 5) 7. the electrical energy transferred per unit charge when one form of energy is converted into electrical energy (13, 5) 8. the number of oscillations per unit time, mesaured in hertz (9) Down 2. a spectrum produced by a material that contains only certain frequencies due to electron transitions between energy levels (4, 8) 3. physical law stating that energy cannot be created or destroyed, just transferred from one form or place to another in any closed system (12, 2, 6) 8. an electrical component designed to heat up, melt and break the circuit, hence stop the current, when a specified amount of electrical current passes through it (4) 9. a form of electromagnetic wave with wavelengths between 10 pm and 0.1 nm (1, 3)
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