Charge

An electrical property carried by particles such as electrons. The quantity of charge transferred is measured in coulombs (C).

The quantity of electrical charge, represented by $Q$ and measured in coulombs (C). In a current calculation, it is the charge passing a point during the stated time.

Electric charge can move through a circuit. In metal wires, the moving charged particles are electrons. Electric current is the rate of flow of charge: it tells you how much charge passes a particular point each second.

Write the equation, substitute the values and give the answer with its unit: C for charge, A for current or s for time.

Current is not used up by a bulb. Energy is transferred, while charge continues around the circuit.

A cell or battery provides a potential difference, which causes these charges to move around the circuit when there is a complete conducting path.

An electrical property of particles. Moving charge forms an electric current; charge is measured in coulombs (C).

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OCR GCSE Combined Science A · J250

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OCR GCSE Combined Science B · J260