Discussion
Home ‣ Electronics ‣ Resistance and Power Comments
- Question
What are the parts of a rheostat?
Options- A. wiper and resistor track
- B. solenoid and armature
- C. contact and wire wound
- D. center tape and wiper
- Correct Answer
- wiper and resistor track
- 1. A good fuse will have:
Options- A. zero ohms resistance
- B. a medium resistance
- C. a high resistance
- D. an infinite resistance Discuss
- 2. How many connections does a rheostat have?
Options- A. 1
- B. 2
- C. 3
- D. 4 Discuss
- 3. With a complex circuit, a supply source senses:
Options- A. open circuit components
- B. when voltages need to be increased
- C. only a single resistive connection
- D. when complex currents are needed Discuss
- 4. How many joules of energy will a 10 W lamp dissipate in one minute?
Options- A. 10 joules
- B. 60 joules
- C. 600 joules
- D. 3600 joules Discuss
- 5. How many amps are used by a 100 watt, 120 volt light bulb?
Options- A. 1.2 amps
- B. 12000 amps
- C. 830 mA
- D. 12 amps Discuss
- 6. One ampere of current flowing through one ohm of resistance is equal to:
Options- A. 1 horsepower
- B. 1 Btu
- C. 1 watt
- D. 1 joule Discuss
- 7. 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
- 8. 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
- 9. 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
- 10. 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
Resistance and Power problems
Search Results
Correct Answer: zero ohms resistance
Correct Answer: 2
Correct Answer: only a single resistive connection
Correct Answer: 600 joules
Correct Answer: 830 mA
Correct Answer: 1 watt
Correct Answer: .12 W
Correct Answer: Current doubles and resistance remains the same.
Correct Answer: the rate at which energy is used
Correct Answer: 22.35
Comments
There are no comments.More in Electronics:
Programming
Copyright ©CuriousTab. All rights reserved.