P2.3 Electric currents
- electrical current is the rate of flow of charge.
- current in metals is a flow of electrons.
- equation:
charge(coulomb ,) = current (ampere, A) * time (second,s) 'Q=Ixt
- cells and battery supply direct current.
- direct current ~ movement of charge in one direction.
- altenating current ~ electrons change directions many times each second.
- Created by: amrik
- Created on: 16-10-13 21:00
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