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Ohm's law

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  • Which of these is NOT part of Ohm's Law?
    Current
    Power
    Resistance
    Voltage
  • If V = 12V and R = 4Ω, what is the current (I)?
    2A
    3A
    4A
    6A
  • What happens to the current if voltage doubles and resistance stays the same?
    Current halves
    Resistance doubles
    Current doubles
    Voltage stays constant
  • Which of the following increases when resistance increases, assuming constant voltage?
    Volts
    Power
    Current
    Heat generated
  • A circuit has a resistance of 6 ohms and a current of 2A. What is the voltage?
    3V
    18V
    8V
    12V
  • What does Ohm’s Law describe?
    The relationship between voltage, current, and resistanc
    The behavior of magnets
    Gravity and motion
    The energy in a chemical reaction
  • Which equation is a rearranged form of Ohm's Law to find resistance?
    R = VI
    R = V / I
    R = V × I
    R = I / V
  • A wire with high resistance will allow:
    No current to flow
    More current to flow
    Unlimited current to flow
    Less current to flow
  • What happens to current if resistance increases and voltage stays the same?
    Voltage increases
    Current increases
    Current decreases
    Nothing changes
  • If a circuit has 10V and 2A, what is the resistance?
    20 ohms
    5 ohms
    50 Ω
    0.2 ohms
  • Resistance is measured in:
    Ohms
    Watts
    Amperes
    Volts
  • What unit is used for measuring current?
    Volts
    Watts
    Ohms
    Amperes
  • In the equation V = IR, what does “I” stand for?
    Inductance
    Current
    Ion flow
    Impedance
  • Who is Ohm’s Law named after?
    Albert Einstein
    Georg Simon Ohm
    Isaac Newton
    Thomas Edison
  • A circuit has a voltage of 10V and a resistance of 5Ω. What is the current?
    0.5A
    2A
    5A
    10A
  • What is the current in a circuit with 24V and 8Ω of resistance?
    3A
    4A
    2A
    6A
  • What does the symbol Ω stand for?
    Watts
    Amps
    Ohms
    Volts
  • What is the formula for Ohm’s Law?
    P = IV
    V = IR
    I = VR
    V = IR²
  • If you increase resistance in a circuit but keep voltage the same, what will happen to current?
    It will decrease
    It will increase
    It will stay the same
    It will become infinite
  • What does the symbol “V” represent in Ohm’s Law?
    Volume
    Velocity
    Voltage
    Vacuum
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