Resistance and Power Questions and Answers

Practice Mode
Showing 10 of 72 questions
Q11
With Ohm's law:
  • 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
Answer: Option A
Q12
 Power is defined as:
  • A the rate at which energy is used
  • B watts
  • C energy
  • D the rate at which energy is generated
Answer: Option A
Q13
What is the most commonly used conductor in electronics?
  • A aluminum
  • B copper
  • C gold
  • D silver
Answer: Option B
Q14
With Ohm's law, no change in resistance means that current and voltage will be:
  • A directly proportional
  • B unable to produce energy
  • C the same
  • D inversely proportional
Answer: Option A
Q15
A potentiometer has how many leads?
  • A 1
  • B 2
  • C 3
  • D 4
Answer: Option C
Q16
What is the ratio of 13 to 47 expressed in percent?
  • A 2.76%
  • B 27.7%
  • C 3.60%
  • D 36.1%
Answer: Option B
Q17
What happens to current and resistance if the voltage doubles?
  • 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.
Answer: Option D
Q18
One problem with mechanically variable resistors is noticeable in audio circuits as:
  • A scratchy noise
  • B lack of bass response
  • C variable volume
  • D too much treble response
Answer: Option A
Q19
A color code of orange, orange, orange is for what ohmic value?
  • A 22 kilohms
  • B 3300 ohms
  • C 44000 ohms
  • D 33 kilohms
Answer: Option D
Q20
A conductor's cross-sectional area in circular mils for onehalf.gif inch is:
  • A 500 cmils
  • B 100,000 cmils
  • C 1,000,000 cmils
  • D 500,000,000 cmils
Answer: Option C

📚 More from Electronics

← All Topics 🎯 Practice ⏱️ Take Test 🔍 Search
Electronics
Back to Electronics
Other Subjects
Questions and Answers for Competitive Exams Various Entrance Test