10.2 Current, Voltage, and Resistance

Cards (83)

  • Ohm's Law describes the relationship between current, voltage, and resistance.

    True
  • What is the unit of measurement for voltage?
    Volts
  • What is the equation to calculate current?
    I=I =Qt \frac{Q}{t}
  • Ohm's Law states that voltage is directly proportional to current if resistance is constant.
    True
  • What is the formula to calculate current using Ohm's Law?
    I=I =VR \frac{V}{R}
  • Ohm's Law states that voltage across a conductor is inversely proportional to the current flowing through it.
    False
  • The current in Ohm's Law is measured in amperes.
    True
  • The current in Ohm's Law is the rate of flow of electric charge.
    True
  • What is the rearranged equation to calculate current using Ohm's Law?
    I = \frac{V}{R}</latex>
  • Match the Ohm's Law variable with its definition:
    Voltage ↔️ Potential difference driving current
    Current ↔️ Rate of flow of electric charge
    Resistance ↔️ Opposition to current flow
  • What is the equation to calculate resistance using Ohm's Law?
    R=R =VI \frac{V}{I}
  • What are the three main factors affecting resistance in a conductor?
    Length, area, material
  • What equation relates current, charge, and time?
    I = \frac{Q}{t}</latex>
  • Voltage is the electrical energy needed to move a unit charge
  • Current is measured in amperes
  • Match the term with its definition:
    Current ↔️ Rate of flow of charge
    Voltage ↔️ Potential difference driving current
    Resistance ↔️ Opposition to current flow
  • What is the equation for calculating resistance?
    R=R =VI \frac{V}{I}
  • What is the unit of measurement for resistance?
    Ohms
  • What is the equation for voltage if energy and charge are known?
    V=V =WQ \frac{W}{Q}
  • VV in Ohm's Law represents the voltage
  • VV in Ohm's Law is measured in volts
  • Steps to calculate current using Ohm's Law
    1️⃣ Start with the equation V=V =IR IR
    2️⃣ Rearrange the equation to I=I =VR \frac{V}{R}
    3️⃣ Substitute the values of VV and RR
    4️⃣ Calculate the value of II
  • The current in a circuit with 12V and is 3A.

    True
  • The voltage in a circuit with 2A and 10Ω is 20V.
    True
  • The resistance in a circuit with 12V and 3A is 4Ω.
    True
  • Doubling the cross-sectional area of a conductor doubles its resistance.
    False
  • Current is the rate of flow of electric charge
  • Resistance is the opposition to the flow of electric current
  • The equation for Ohm's Law is V = IR
  • The formula to calculate current using Ohm's Law is I=I =VR \frac{V}{R}.

    True
  • What is the voltage in a circuit with a current of 2A and a resistance of 10Ω?
    20V
  • V=V =IR IR is used to solve for R
  • What is the unit of resistance?
    Ohms (Ω)
  • Current is the rate of flow of electric charge measured in amperes.
    True
  • The resistance of a conductor is inversely proportional to its area
  • A power source in a circuit provides electrical energy
  • In a circuit diagram, a light bulb is represented by a specific symbol.

    True
  • The load in a circuit diagram consumes electrical energy.
    True
  • A power source in a circuit provides the electrical energy
  • Connecting wires in a circuit diagram are represented by straight lines