# Energy and Power

• ## A 6 V battery is connected to a 300 Ω load. Under these conditions, it is rated at 40 Ah. How long can it supply current to the load?

• A. 1 h
• B. 200 h
• C. 2,000 h
• D. 10 h
Explanation:

No answer description available for this question

• ## When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is_____.

• A. Overheated
• B. Shorted
• C. Open
• D. Reversed
Explanation:

No answer description available for this question

• ## A given power supply is capable of providing 6 A for 3.5 h. Its ampere-hour rating is_____.

• A. 0.58 Ah
• B. 2.1 Ah
• C. 21 Ah
• D. 58 Ah
Explanation:

No answer description available for this question

• ## Watt’s law states the relationships of power to energy.

• A. True
• B. False
Explanation:

No answer description available for this question

• ## The watt is the unit of power.

• A. True
• B. False
Explanation:

No answer description available for this question

• ## In 0.025 W, there are_____.

• A. 25 kW
• B. 0.00025 mW
• C. 2,500 µW
• D. 25 mW
Explanation:

No answer description available for this question

• ## The capacity of a battery is measured in milli-amperes.

• A. True
• B. False
Explanation:

No answer description available for this question

• ## 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
Explanation:

No answer description available for this question

• ## The power rating of a carbon-composition resistor that is to handle up to 1.2 W should be_____.

• A. 2 W
• B. 1 W
• C. 5 W
• D. 0.5 W
Explanation:

No answer description available for this question

• A. 8.7 mA
• B. 87 mA
• C. 8.7 µA
• D. 8.7 A