Discussion
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- Question
The load resistance increases. How will the load current change?
Options- A. vary
- B. remain constant
- C. increase
- D. decrease
- Correct Answer
- decrease
- 1. What is the most commonly used conductor in electronics?
Options- A. aluminum
- B. copper
- C. gold
- D. silver Discuss
- 2. How is power dissipated in a resistor?
Options- A. by resistance
- B. by voltage
- C. by current
- D. by heat Discuss
- 3. What is the ratio of 13 to 47 expressed in percent?
Options- A. 2.76%
- B. 27.7%
- C. 3.60%
- D. 36.1% Discuss
- 4. The resistivity of copper is:
Options- A. 9.9 Ω
- B. 10.7 Ω
- C. 16.7 Ω
- D. 17.0 Ω Discuss
- 5. If a metallic conductor has a positive temperature coefficient of resistance, then:
Options- A. as temperature increases, resistance decreases
- B. as current increases, resistance decreases
- C. as voltage increases, current increases
- D. as temperature increases, resistance increases Discuss
- 6. With Ohm's law:
Options- A. current is inversely proportional to resistance
- B. resistance is directly proportional to voltage
- C. voltage is indirectly proportional to power
- D. current is directly proportional to resistance Discuss
- 7. Electrical equipment is protected against excessive current by a(n):
Options- A. fusible wire link
- B. insulated glass container
- C. metal ended coil
- D. circuit opener Discuss
- 8. If resistance decreases, then current will:
Options- A. decrease
- B. increase
- C. remain the same
- D. double Discuss
- 9. Wirewound resistors are usually used in circuits that have:
Options- A. high current
- B. negative temperature coefficients
- C. low power
- D. high voltage Discuss
- 10. How many ohms of resistance allows a current of 720 µA to flow when 3.6 kV is applied?
Options- A. 200 nΩ
- B. 5 kΩ
- C. 200 kΩ
- D. 5 MΩ Discuss
Resistance and Power problems
Search Results
Correct Answer: copper
Correct Answer: by heat
Correct Answer: 27.7%
Correct Answer: 10.7 Ω
Correct Answer: as temperature increases, resistance increases
Correct Answer: current is inversely proportional to resistance
Correct Answer: fusible wire link
Correct Answer: increase
Correct Answer: high current
Correct Answer: 5 MΩ
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