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

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Circuit Diagrams
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What does a potential difference of 1 volt mean?

1 J transferred per coulomb of charge

How are voltmeters always connected in a circuit?

In parallel

In a series circuit, how is P.D. distributed across components?

P.D. is shared across components

What is the P.D. across components connected in parallel?

The same across each component

What is a battery?

Two or more cells connected together

How do you find the total P.D. of a battery?

Add up the P.D. of each cell

What is the unit of electrical charge?

Coulomb (C)

What does a current of 1 ampere equal?

1 coulomb of charge flowing per second

Using Q=I×tQ = I \times t, if I=2I = 2 A and t=5t = 5 s, what is QQ?

10 C

Which formula shows energy transferred by components?

E=Q×VE = Q \times V

What is the formula for resistance?

R=VIR = \frac{V}{I}

In which direction does electric current flow?

From negative terminal to positive

How does current behave in a series circuit?

Same all the way around

How does current behave in parallel circuits?

Splits at branches then adds up

What device is used to measure electric current?

Ammeter

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