Current and ciruit symbols

Current
1. It is the flow of electrical charge
2. In a single, closed loop the current has the same value everywhere in the circuit.
3. The unit of current is the ampere, A
4. The size of the current is the rate of flow of charge
Potential difference
1. Know as voltage
2. Drivinf force that pushes the charge around
3. The unit of potential difference is the volt, V
Resistance
1. Anything that slows down the current in a circuit
2. Measured in Ohms, Ω
3. The greater the resistance that across a component, the smaller the current that flows
Charge
1. The formula for charge is: Q = It
  1. Q is charge flow (coulombs, C)
  2. I is current (ampere, A)
  3. t is time (s)
  4. More charge passes around the circuit when the current flow is larger

Resource summary

	Created by Poke Maniac about 7 years ago