Start learning →

B.Tech EEE Electric Current, Resistance, and Ohm's Law — practice questions

Explore 90 free Electric Current, Resistance, and Ohm's Law questions in B.Tech EEE Electrical Engineering. Open each question or exercise to read its content, reference answers and available explanation.

Practise Electric Current, Resistance, and Ohm's Law with Quill →

Electric Current, Resistance, and Ohm's Law questions and exercises with answers

Showing questions 1–30 of 90.

Sort each trait into DC or ACRead the answer and worked solution →Which material resists more?Read the answer and worked solution →Close the gaps in each formulaRead the answer and worked solution →Order the shock current ladderRead the answer and worked solution →True or false on moving chargeRead the answer and worked solution →Match quantity to its unitRead the answer and worked solution →Tap the wrong word in each circuit claimRead the answer and worked solution →Electric current is defined as which of these?Read the answer and worked solution →One ampere is equal to which of these?Read the answer and worked solution →A truck battery sets 720 C of charge in motion in 4.00 s while starting an engine. What current does it deliver?Read the answer and worked solution →A handheld calculator draws a steady 0.300 mA. How long does 1.00 C of charge take to pass through it?Read the answer and worked solution →Conventional current in a circuit is taken to point in which direction?Read the answer and worked solution →In an ionic solution such as salt water, which charges carry the current?Read the answer and worked solution →Whose eighteenth century choice of sign is the reason conventional current points the way positive charge would flow?Read the answer and worked solution →How does a conductor carrying a steady current differ from a conductor in static equilibrium?Read the answer and worked solution →Drift velocity in a conductor is best described as which of these?Read the answer and worked solution →A 14-gauge copper wire of diameter 1.628 mm has a drift speed of 1.00 mm/s. Using 8.342 x 10^28 free electrons per cubic metre, what current flows?Read the answer and worked solution →What is unusual about keeping a steady current flowing in a superconductor?Read the answer and worked solution →Why are good electrical conductors usually good conductors of heat as well?Read the answer and worked solution →Who first showed experimentally that the current in a metal wire is directly proportional to the applied voltage?Read the answer and worked solution →Which quantity is defined as the electric property that impedes current?Read the answer and worked solution →A resistor is connected across a fixed voltage source and its resistance is then doubled. What happens to the current?Read the answer and worked solution →A material is described as ohmic when which condition holds?Read the answer and worked solution →One ohm is equal to which of these?Read the answer and worked solution →What makes a circuit a simple circuit?Read the answer and worked solution →An automobile headlight passes 2.50 A when 12.0 V is applied to it. What is its resistance?Read the answer and worked solution →Why does an incandescent headlight draw far more current in the first moments after it is switched on?Read the answer and worked solution →What order of magnitude of resistance is quoted for a metre-long piece of large-diameter copper wire?Read the answer and worked solution →The product of current and resistance for a resistor is commonly given which name?Read the answer and worked solution →For a uniform cylindrical conductor, how does resistance depend on cross-sectional area?Read the answer and worked solution →

Worked practice questions

Sort each trait into DC or AC

Read exercise and reference answers
Left
DC
Items
  1. Item
    Steady one way
    Answer
    DC
  2. Item
    Reverses direction
    Answer
    AC
  3. Item
    Household outlets
    Answer
    AC
  4. Item
    Battery output
    Answer
    DC
  5. Item
    Constant in time
    Answer
    DC
  6. Item
    Grid transmission
    Answer
    AC
  7. Item
    Easy to step up
    Answer
    AC
  8. Item
    Flashlight cells
    Answer
    DC
Right
AC
Instructions
Swipe left if it describes direct current, right if it describes alternating current.
_Source: OpenStax College Physics, section 20.5 Alternating Current versus Direct Current_

Open this exercise →

Which material resists more?

Read exercise and reference answers
Questions
  1. A
    Copper
    B
    Iron
    Higher value
    Iron
  2. A
    Nichrome
    B
    Mercury
    Higher value
    Nichrome
  3. A
    Silver
    B
    Aluminium
    Higher value
    Aluminium
  4. A
    Gold
    B
    Tungsten
    Higher value
    Tungsten
  5. A
    Lead
    B
    Steel
    Higher value
    Lead
  6. A
    Pure silicon
    B
    Pure carbon
    Higher value
    Pure silicon
Instructions
Tap the material with the higher resistivity at 20 degrees C.
_Source: OpenStax College Physics, section 20.3 Resistance and Resistivity_

Open this exercise →

Close the gaps in each formula

Read exercise and reference answers
Missing parts
  1. Answer
    R
    Choices
    1. R
    2. P
    3. Q
  2. Answer
    V
    Choices
    1. R
    2. V
    3. t
  3. Answer
    rho
    Choices
    1. alpha
    2. mu
    3. rho
Complete the statement
Voltage across a resistor: V = I times {0}. Electric power: P = I times {1}. Resistance of a cylinder: R = {2} times L divided by A.
Instructions
Tap the symbol that belongs in each blank.
_Source: OpenStax College Physics, section 20.3 Resistance and Resistivity_

Open this exercise →

How to practise

  1. Choose a Electric Current, Resistance, and Ohm's Law question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Electrical Engineering topics

MagnetismCircuits and DC Instruments