Year8-Resistance Flashcards

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1
Q

What is resistance measured in?

A

Ohms, (omega sign)

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2
Q

What is the formulae for current?

A

Current(A)=potential difference(V) /Resistance(omega)

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3
Q

Formulae for resistance

A

Potential difference(V)/current(A)

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4
Q

Formulae for potential difference?

A

Current(A)*Resistance(omega)

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5
Q

If the resistance is lower, what does it mean?

A

The electrons are passing through easily.

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6
Q

If the resistance is higher, what does that mean?

A

The electrons find it hard to get through

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7
Q

Why do electrons find it harder to get through a larger circuit?

A

They are colliding with the ions of the metal

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8
Q

Are metals good conductors?

A

Yes because they have low resistance

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9
Q

Is the air usually an insulator?

A

Yes

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