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- 1. Multiple ChoiceWhich copper wire has the lowest resistance?1 metre of 1 mm diameter wire0.5 metre of 1 mm diameter wire0.5 metre of 0.5 mm diameter wire1 metere of 0.5 mm diameter wire
- 2. Multiple ChoiceWhat happens to a resistor when the temperature is increased?Increasesdecreasesstay the samevary randomly
- 3. Multiple Choice
The length of a certain conductor of resistance 100 is doubled and its cross-sectional area is doubled. Its new resistance is
100
50
200
400
- 4. Multiple ChoiceMaterials that have a high electrical resistanceless lengthless tempareturemore thicknessless cross sectional area
- 5. Multiple Choice
the resistance of the two conductorR2 > R3R2 = R3R2 < R3NONE OF THE ABOVE - 6. Multiple ChoiceThe conductor with higher temperaturehigh resistancelow resistancesame resistanceit does not affect the resistance
- 7. Multiple ChoiceAmpere second could be the unit ofpowerconductancechargeenergy
- 8. Multiple Choice
Two bulbs marked 200 watt-250 volts and 100 watt-250 volts are joined in series to 250 volts supply. Power consumed in circuit is
33 W
67 W
100 W
300 W
- 9. Multiple ChoiceWhat is resistance measured in?voltsAmperes (Amps)OhmsCoulombs
- 10. Multiple ChoiceWhat is the opposition to the flow of current in a conductor?powerresistancepowerpotential difference
- 11. Multiple ChoiceCurrent from a battery is:ACDC
- 12. Multiple ChoiceIdentify the following as characteristics of either a series circuit or a parallel circuit:
Consists of units wired in separate branches.Series circuitParallel circuit - 13. Multiple ChoiceThis is an example of a ______ circuitSeriesParallelOpenDihexihedral
- 14. Multiple ChoiceWhat is the unit abbreviation for variable RAVOΩ
- 15. Multiple ChoiceWhat is the unit for current?AmpsVoltageOhmsNone of the above
- 16. Multiple ChoiceThis is an example of a _______ circuitopenseriesparallelsquare
- 17. Multiple ChoiceThis is an example of a ______ circuitSeriesParallelOpenDihexihedral
- 18. Multiple ChoiceThe equivalent resistance in this circuit is100 ohms450 ohms400 ohms30 ohms
- 19. Multiple Choice
The current through the battery of this circuit is
0.02 amps
0.09 amps
50 amps
9 amps
- 20. Multiple ChoiceThe voltage dropped across the 300 ohm resistor is6 V9 V2 V30 V
- 21. Multiple ChoiceThe voltage drop across the 180 ohm resistor is9 V6 V2 V12 V
- 22. Multiple ChoiceThe current going through the 180 ohm resistor is0.05 amps0.2 amps0.1 amps20 amps
- 23. Multiple ChoiceThe current going through the 45 ohm resistor is0.05 amps0.2 amps0.1 amps5 amps
- 24. Multiple ChoiceThe current going through the 90 ohm resistor is10 amps0.1 amps0.2 amps
- 25. Multiple ChoiceThe current going through the battery of this circuit is0.35 amps0.0286 amps0 amps9 amps
- 26. Multiple ChoiceThe equivalent resistance of this circuit is25.7 ohms315 ohms324 ohms90 ohms
- 27. Multiple ChoiceWhat will happen if one light bulb is removed from this circuit?The other bulbs will go out.The other bulbs will get brighter.The other bulbs will get dimmer.The battery will become stronger.
- 28. Multiple ChoiceBulbs are in parallel - Circuit X is brighter than Circuit YBulbs are in parallel - Circuit Y is brighter than Circuit XBulbs are in series - Circuit X is brighter than Circuit YBulbs are in series - Circuit Y is brighter than Circuit X
- 29. Multiple ChoiceA2 = A3A2 + A3 = A1A1 + A2 = A3A4 = A2 - A3
- 30. Multiple ChoiceIn a parallel circuit, if one connection is broken, all of the connections stop working.TrueFalse
- Answer choicesTagsAnswer choicesTags