1. A 220 Ω resistor dissipates 3 W. The voltage is A. 73.3 V B. 2.5 V C. 25.7 V D. 257 V Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
2. If you used 400 W of power for 30 h, you have used A. 1.3 kWh B. 13.3 kWh C. 1.2 kWh D. 12 kWh Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
3. For 12 V and 40 mA, the power is A. 480 mW B. 0.480 W C. 480,000 µW D. All of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
4. How many watt-hours represent 65 W used for 18 h? A. 11.7 Wh B. 1,170 Wh C. 11,700 Wh D. 117,000 Wh Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
5. Energy equals power multiplied by time. A. True B. False Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
6. Watt's law states the relationships of power to energy. A. True B. False Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
7. A 3.3 kΩ resistor dissipates 0.25 W. The current is A. 8.7 mA B. 87 mA C. 8.7 µA D. 8.7 A Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
8. A power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is A. 8.57 % B. 42.85 % C. 4.28 % D. 85.7 % Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
9. How much continuous current can be drawn from a 60 Ah battery for 14 h? A. 42.8 A B. 428 A C. 4.28 A D. 4.2 A Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
10. At the end of a 14 day period, your utility bill shows that you have used 18 kWh. What is your average daily power? A. 1.286 kWh B. 12.85 kWh C. 535 kWh D. 252 kWh Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board