Physics Tuition Singapore Secondary Science Tuition – Electricity Potential Difference

POTENTIAL DIFFERENCE

• Energy is needed to push the electric charges to move from one point to another in an electric circuit.
• Without energy, electric charges will not move. Therefore, there is no electricity in the circuit. 
• The amount of energy needed to drive an electric charge across two points is called the potential difference.
• The definition of potential difference across two points: It is the energy needed to move a unit charge to flow between two points of a circuit.

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