Electromotive force and internal resistance Flashcards

1
Q

What is internal resistance?

A

Internal resistance is the resistance within a cell in a circuit.

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2
Q

What is EMF?

A

The electromotive force (EMF) of a battery is the amount of electrical energy it porduces and transfers to each coulomb of charge.

It is measures in volts (V).

***not a force***

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3
Q

What are the two equations for emf?

A

E = V + Ir

E = I(R+r)

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