Current, Potential Difference & Resistance (OCR GCSE Physics A, Combined (Gateway Science Suite)): Quizzes

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Charge & Current
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What is electric current?

A flow of electrical charge

What is the unit of electrical charge?

Coulombs (C)

What is the unit of current?

Amperes (A)

Which instrument is used to measure current?

An ammeter

What is the equation for calculating charge flow?

Q=ItQ = It

In the equation Q=ItQ = It, what does QQ represent?

Charge flow in coulombs (C)

In the equation Q=ItQ = It, what does II represent?

Current in amperes (A)

In the equation Q=ItQ = It, what does tt represent?

Time in seconds (s)

A current of 2.52.5 A flows for 6060 s. What is the charge flow?

150150 C

When will current flow through a circuit?

When it makes a complete loop

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Current, Potential Difference & Resistance

Series & Parallel Circuits

Energy Transfers

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