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# Rank circuits in order of current and net power output of battery

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Problem 1
A simple circuit consists of a resistor connected to a battery. The battery has emf (e), internal resistance (r), and terminal voltage (V_ab), and the resistor has resistance (R) .

Rank the following circuits in order of current, from highest to lowest values.

1. e = unknown 2. e = 1.4 V
r = 0.1 ohms r = 0.1 V
V_ab = 1.4 V V_ab = 1.2 V
R = 2.0 ohms R = unknown

3. e = 1.4 V 4. e = 1.4 V
r = 0.1 ohms r = 0.2 ohms
V_ab = unknown V_ab = unknown
R = 2.0 ohms R = 1.9 ohms

5. e = 1.4 V
r = unknown
V_ab = 1.2 V
R = 2.0 Ohms

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Problem 2

For this problem rank the 5 scenarios that were stated in the first problem. Rank the circuits in order of the net power output of the battery, from highest to lowest values.