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6. Principle of conservation of energy
- energy can only be transferred to others
- energy cannot be created or destroyed only transferred
- energy can be created or destroyed
7. Definition of curent
- rate of flow of electrons
- rate of flow of charge
- rate of flow of protons
8. what is ohms law?
- the current flowing through a metal wire at a constant temperature in inversely proportional to the pd across it
- the current flowing through a metal wire at a constant temperature is proportional to the pd across it
- the current flowing through an insulator at a changing temperature is proportional to the pd across it