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Calculating resistance, voltage, and current in electrical circuits

Quiz by Chris McElroy

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10 questions
Show answers
  • Q1
    What is Ohm's Law?
    V=IR^2
    V=I/R
    P=IV
    V=IR
    30s
  • Q2
    What is the unit of resistance?
    Watt
    Ampere
    Ohm
    Volt
    30s
  • Q3
    What is the formula for calculating power in a circuit?
    P=VI
    P=V/R
    P=V^2/R
    P=I^2R
    30s
  • Q4
    What is the formula for calculating current in a circuit?
    I=VR
    I=V/R
    I=V/R^2
    I=V+R
    30s
  • Q5
    What is the formula for calculating voltage in a circuit?
    V=P/R
    V=I^2R
    V=I/R
    V=IR
    30s
  • Q6
    What is the total resistance of two resistors in series with values of 5 ohms and 3 ohms?
    35 ohms
    8 ohms
    15 ohms
    2 ohms
    30s
  • Q7
    What is the total resistance of two resistors in parallel with values of 5 ohms and 3 ohms?
    35 ohms
    1.875 ohms
    8 ohms
    15 ohms
    30s
  • Q8
    What is the current through a 10 ohm resistor connected to a 20 volt battery?
    5 amps
    2 amps
    0.5 amps
    10 amps
    30s
  • Q9
    What is the voltage across a 5 ohm resistor with a current of 2 amps?
    7.5 volts
    15 volts
    2.5 volts
    10 volts
    30s
  • Q10
    What is the resistance of a circuit with a voltage of 12 volts and a current of 4 amps?
    3 ohms
    8 ohms
    24 ohms
    48 ohms
    30s

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