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- 1. Multiple Choice
The current in the wires of a circuit is 120.0 milliAmps. If the battery was replaced by one with double the voltage (with no other replacements), then its new current would be _____ milliAmps.
60 milliAmps
120 milliAmps
240 milliAmps
No way to tell
- 2. Multiple Choice
The resistance of a light bulb is 30 ohms. If the current must double but the battery is remaining the same, the light bulb must be replaced by one with ____ ohms.
60 ohms
30 ohms (the light bulb resistance will not change)
15 ohms
More information is needed
- 3. Multiple Choice
The resistance of the light bulb is 15 ohms. If the battery was replaced by one with double the voltage (with no other replacements), then the light bulb resistance must _____.
Increase to 30 ohms
Not change
Decrease to 7.5 ohms
No way to tell
- 4. Multiple Choice
The current in the wires of a circuit is 60.0 milliAmps. If the battery was replaced by one with ⅓ of the original voltage (with no other replacements), then its new current would be _____ milliAmps.
20 milliamps
60 milliamps
180 milliamps
No way to tell
- 5. Multiple Choice
The voltage of the battery is 8 volts. If the current must double but the light bulb is remaining the same, the battery must be replaced by one with ____ volts
16 volts
8 volts (the battery voltage won’t change)
4 volts
More information is needed
- 6. Multiple Choice
The current in the wires of a circuit is 180.0 milliAmps. If the light bulb was replaced by one with one half of the original resistance (with no other replacements), then its new current would be _____ milliAmps.
90 milliAmps
180 milliAmps
360 milliAmps
No way to tell
- 7. Multiple Choice
The current in the wires of a circuit is 90.0 milliAmps. If the light bulb was replaced by one with triple the original resistance (with no other replacements), then its new current would be _____ milliAmps.
30 milliAmps
90 milliAmps
270 milliAmps
No way to tell
- 8. Multiple Choice
The voltage of a battery is 9 V. If the light bulb was replaced by one with triple the original resistance (with no other replacements), then the battery voltage must _____.
Increase to 27 volts
Not change
Decrease to 3 volts
No way to tell
- 9. Multiple Choice
The current in the wires of a circuit is 90.0 milliAmps. If the light bulb was replaced by one with double the original resistance and the battery is replaced by one with triple the original voltage, then its new current would be _____ milliAmps.
15 milliAmps
60 milliAmps
135 milliAmps
540 milliamps
- 10. Multiple Choice
The current in the wires of a circuit is 72.0 milliAmps. If the light bulb was replaced by one with one half the original resistance and the battery is replaced by one with triple the original voltage, then its new current would be _____ milliAmps.
12 milliAmps
48 milliAmps
108 milliAmps
432 milliAmps
- 11. Multiple Choice
The voltage of the battery is 18 V. If the light bulb is replaced by one with one half the original resistance, which of the following will triple the current?
Replace the battery with a battery voltage of 27 V.
Replace the battery with a battery voltage of 12 V.
Replace the battery with a battery voltage of 108 V.
Replace the battery with a battery voltage of 3 V.
- 12. Multiple Choice
The resistance of the light bulb is 24 ohms. If the battery is replaced by one with triple the original voltage and the current in the circuit must be quadrupled, then the light bulb must be replaced by one with ___ ohms.
2 ohms
18 ohms
34 ohms
288 ohms
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