Electricity Flashcards by Sukhdeep Aulakh

Q

What is the equation for current?

A

I = Q/t (in seconds) = (charge / time in seconds)

There are other equations which come from rearrangements.

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Q

What is the equation/s for voltage?

A

V=IR (current x resistance)
V=E/Q (energy / charge)

There are other equations which come from rearrangements.

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Q

What is voltage measured in?

A

Volts

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Q

What does EMF stand for?

A

Electromotive force

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Q

What is the equation relating current, emf resistance?

A

ε=I(r+R)

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Q

What is the equation relating volts lost to voltage and emf?

A

v= ε-V

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Q

What is the equation relating lost volts, internal resistance and current?

A

v=Ir

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