A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt-hours of energy does it consume? 8.4 kWh 2.01 kWh 201.6 kWh 20.16 kWh TRUE ANSWER : ? YOUR ANSWER : ?
If it takes 400 ms to use 12,000 J of energy, the power is 30 W 3 W 30 kW 300 kW TRUE ANSWER : ? YOUR ANSWER : ?
When the current through a 12 k resistor is 8 mA, the power is 7.68 W 76.8 W 768 mW 7.68 mW TRUE ANSWER : ? YOUR ANSWER : ?
At the end of a 14 day period, your utility bill shows that you have used 18 kWh. What is your average daily power? 12.85 kWh 535 kWh 1.286 kWh 252 kWh TRUE ANSWER : ? YOUR ANSWER : ?
A 15 V source is connected across a 12 resistor. How much energy is used in three minutes? 5.6 Wh 56.25 Wh 938 Wh 0.938 Wh TRUE ANSWER : ? YOUR ANSWER : ?
A 220 resistor dissipates 3 W. The voltage is 73.3 V 2.5 V 257 V 25.7 V TRUE ANSWER : ? YOUR ANSWER : ?
A 120 resistor must carry a maximum current of 25 mA. Its rating should be at least 150 mW 15 mW 4.8 W 480 mW TRUE ANSWER : ? YOUR ANSWER : ?
A 33 half-watt resistor and a 330 half-watt resistor are connected across a 12 V source. Which one(s) will overheat? 33 neither resistor both resistors 330 TRUE ANSWER : ? YOUR ANSWER : ?
A 68 resistor is connected across the terminals of a 3 V battery. The power dissipation of the resistor is 132 mW 13.2 mW 22.6 mW 226 mW TRUE ANSWER : ? YOUR ANSWER : ?