Resistance and Power Questions and Answers

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Q1
How do fixed resistors usually fail?
  • A slowly over time
  • B by increasing their value
  • C by becoming an open circuit
  • D by increasing their value and becoming an open circuit
Answer: Option C
Q2
With Ohm's law, if voltage increases and resistance stays the same:
  • A current remains the same
  • B power decreases
  • C current increases
  • D resistance decreases
Answer: Option C
Q3
Which formula shows a direct proportionality between power and voltage?
  • A V = IR
  • B P = VI
  • C P = IR
  • D I = V/R
Answer: Option B
Q4
With 1 mA of current, what wattage rating should a 470 ohm resistor have?
  • A 1/4 watt
  • B 1/2 watt
  • C 1 watt
  • D 2 watts
Answer: Option A
Q5
How is a 3.9 komega.gif resistor color-coded?
  • A red, white, red, gold
  • B red, green, orange, silver
  • C orange, white, red, gold
  • D orange, green, orange, silver
Answer: Option C
Q6
What resistor type is found in SIPs and DIPs?
  • A metal film
  • B wirewound
  • C metal oxide
  • D thick film
Answer: Option D
Q7
Ohm's law is not:
  • A V = IR
  • B I = V/R
  • C R = IV
  • D R = V/I
Answer: Option C
Q8
 What are the two major categories for resistors?
  • A low and high ohmic value
  • B commercial and industrial
  • C low and high power value
  • D fixed and variable
Answer: Option D
Q9
How many connections does a potentiometer have?
  • A 1
  • B 2
  • C 3
  • D 4
Answer: Option C
Q10
The six basic forms of energy are:
  • A light, sun, magnetic, chemical, electrical, and mechanical
  • B electrical, mechanical, light, heat, magnetic, and chemical
  • C electrical, mechanical, sun, heat, chemical, and light
  • D potential, sun, light, chemical, electrical, and mechanical
Answer: Option B

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