H2P-299
Internal resistance
H2 Physics · JC 2 · Easy · Internal resistance
A 12 V battery with internal resistance 1.5 Ω is connected to a 4.5 Ω external resistor. What is the potential difference across the external resistor?
- 3.0 V
- 4.5 V
- 9.0 V
- 12 V
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