# Electricity sections 4-6 Part B

## Quiz by Gwyn Bixler

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15 questions

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- Q1If a household’s voltage is 120 volts, what is the power rating of a light bulb with 0.2 amps of current flowing through it?600 watts2.4 kw.0016666 watts24 watts30s
- Q2Power is calculated by multiplying voltage byresistance.current.energy.voltage.30s
- Q3A device used to open and close an electric circuit is a(n)resistor.light bulb.energy source.switch.30s
- Q4What effect would a current of greater than 0.2 amp have on your body?It would be almost unnoticeable.It would feel like a shock you get from touching a doorknob.It could cause burns and stop your heart.It might cause an irregular heartbeat and disrupt the flow of blood.30s
- Q5What is a disadvantage of using fuses?When a fuse burns out, it cannot be used again.A fuse shuts off when the current gets too high.A fuse contains a thin strip of metal that can melt.A fuse prevents circuits from overheating.30s
- Q6A connection that allows current to take the path of least resistance is called aparallel circuit.grounded circuit.series circuit.short circuit.30s
- Q7A device to measure electrical potential energy difference, or voltage, is called a(n)galvanometer.voltmeter.Ohm meter.ammeter.30s
- Q8In a parallel circuit with three bulbs,there is only one path for the current to take.the overall resistance increases if a new branch is added.current from each bulb has its own path.the bulbs must all be located on the same branch.30s
- Q9In a series circuit with three bulbs, adding another bulb willmake all the bulbs dimmer.make some of the bulbs dimmer.make all the bulbs brighter.make the nearest bulb brighter.30s
- Q10According to Ohm’s law, what is the resistance of a light if the voltage is 6.0 volts and the current is 0.30 amps?20 ohms0.05 ohmsanswer not given1.8 ohms30s
- Q11According to Ohm’s law, resistance is equal to voltage divided bytime.current.potential.conduction.30s
- Q12If an electric water heater uses 60 kW of power and runs for 2 hours, what is the total amount of energy used?0.03 kwhanswer not given30 kwh120 kwh30s
- Q13The current through an appliance in an electric circuit is 9 A. The voltage across the device is 45 V. What is the resistance of the appliance?405 ohms0.2 ohmsanswer not given5 ohms30s
- Q14A toaster oven has a resistance of 3 ohms in its heating coils. The voltage across the coils in the standard 120 V. What is the current in the heating coils?40 A360 A3.6 A0.025 A30s
- Q15There is a 3.0 A current in a light-bulb in an electric circuit. The resistance of the bulb is 20 ohms. What is the voltage across the bulb?6.66 V0.15 V60 Vnot given30s