hard · Enhanced ACT science

A student built a simple circuit with a battery and two resistors, R1 and R2, and measured current through each arrangement:

| Arrangement | R1 (Ω) | R2 (Ω) | Total current (A) |

|---|---|---|---|

| Series | 4 | 8 | 1.0 |

| Parallel | 4 | 8 | 4.5 |

Based on the data, what is the voltage of the battery?

  1. 6 volts
  2. 12 volts
  3. 24 volts
  4. 36 volts

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