Discussion
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- Question
What property does an incandescent lamp possess?
Options- A. cold resistance
- B. hot resistance
- C. ballast resistance
- D. both cold and hot resistance
- Correct Answer
- both cold and hot resistance
- 1. The word work means that:
Options- A. energy has been transferred
- B. it is inversely related to energy
- C. no energy has been transferred
- D. work and energy are not related Discuss
- 2. A 22-gauge wire will have a diameter in mils of:
Options- A. 10.03
- B. 22.35
- C. 45.26
- D. 71.96 Discuss
- 3. Power is defined as:
Options- A. the rate at which energy is used
- B. watts
- C. energy
- D. the rate at which energy is generated Discuss
- 4. What happens to current and resistance if the voltage doubles?
Options- A. Current doubles and resistance doubles.
- B. Current doubles and resistance is halved.
- C. Current remains the same and resistance doubles.
- D. Current doubles and resistance remains the same. Discuss
- 5. What is the power dissipated by a 1.2 kΩ resistor with 12 volts across it?
Options- A. 12 W
- B. 1.2 W
- C. .12 W
- D. 12 mW Discuss
- 6. Ohm's law is not:
Options- A. V = IR
- B. I = V/R
- C. R = IV
- D. R = V/I Discuss
- 7. Good insulators:
Options- A. have few electrons in their outer shells
- B. have a large dielectric strength
- C. have a small breakdown voltage
- D. have many electrons in the nucleus Discuss
- 8. After a lamp is turned on, its filament resistance will change to become:
Options- A. less resistive
- B. cooler
- C. brighter
- D. more resistive Discuss
- 9. What current is flowing in the circuit?
Options- A. 288 kA
- B. 2 kA
- C. 50 mA
- D. 500 µA Discuss
- 10. What are the two major categories for resistors?
Options- A. low and high ohmic value
- B. commercial and industrial
- C. low and high power value
- D. fixed and variable Discuss
Resistance and Power problems
Search Results
Correct Answer: energy has been transferred
Correct Answer: 22.35
Correct Answer: the rate at which energy is used
Correct Answer: Current doubles and resistance remains the same.
Correct Answer: .12 W
Correct Answer: R = IV
Correct Answer: have a large dielectric strength
Correct Answer: more resistive
Correct Answer: 500 µA
Correct Answer: fixed and variable
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