Electronic Components and Switching Practice Questions

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17.2Electronic Components and Switching

Electronic Components and Switching Revision Questions

1. What is the potential difference ΔV across the potential divider terminals in the circuit shown in the figure?

Physics Tutorials: This image provides visual information for the physics tutorial Electronic Components and Switching
  1. 12 V
  2. 10.5 V
  3. 1.7 V
  4. 1.5 V

Correct Answer: D

2. What is the current flowing in the main branch of the circuit below?

Physics Tutorials: This image provides visual information for the physics tutorial Electronic Components and Switching
  1. 12 A
  2. 8 A
  3. 6 A
  4. 1.1 A

Correct Answer: B

3. The lamp in the circuit below glows when the current reaches 12 mA. The resistance of thermistor at 1000 C is 4 kΩ and it increases by 50 Ω per every degree drop. At what temperature the lamp starts glowing?

Physics Tutorials: This image provides visual information for the physics tutorial Electronic Components and Switching
  1. At 1400 C
  2. At 1000 C
  3. At 600 C
  4. At 200 C

Correct Answer: C

For more insight on Electronics, go back to the previous article of this section and to sections 14-16 of this course.

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