Question

A 3.0 Ohms resistor is connected in series to a battery with terminal voltage 7 V and an internal resistance of 1.0 Ohm. What
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Answer #1

Relationship between terminal voltage and internal resistance is given by:

V = E - I*r

V = Potential difference across 3.0 ohm resistor = I*R

I*R = E - I*r

I = E/(R + r)

I = 7/(3.0 + 1.0) = 1.75 A

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