4.2.3 Ohm's Law

• What does Ohm's Law state regarding the relationship between current and voltage?

  Directly proportional
• Ohm's Law applies to all types of electrical circuits.

  False
• Arrange the variables in Ohm's Law by their symbols and units:

  1️⃣ V (Volts)

  2️⃣ I (Amperes)

  3️⃣ R (Ohms)
• In Ohm's Law, V represents the potential difference measured in volts
• The unit for current (I) in Ohm's Law is amperes
• Match the variables in Ohm's Law with their definitions:

  Voltage (V) ↔️ Potential difference across a conductor

  Current (I) ↔️ Rate of flow of electric charge

  Resistance (R) ↔️ Opposition to current flow
• In Ohm's Law, R represents the resistance measured in ohms
• What is the definition of current (I) in Ohm's Law?

  Rate of charge flow
• What is the role of resistance in Ohm's Law?

  Limits current flow
• Voltage acts as the force propelling electrons in a circuit.


  True
• Current quantifies the flow of electrons in a circuit.


  True
• Resistance limits current flow and dissipates energy as heat.


  True
• What does the Ohm's Law formula $V =$$IR$ highlight about the relationship between voltage, current, and resistance?


  Voltage is proportional to current and resistance
• What is the current in a circuit with 12 volts and 3 ohms of resistance?

  4 amperes
• Ohm's Law states that current is directly proportional to voltage if temperature and conditions remain constant.


  True
• What unit is voltage measured in?

  Volts
• Match the variable with its unit in Ohm's Law:

  Voltage ↔️ Volts

  Current ↔️ Amperes

  Resistance ↔️ Ohms
• Resistance is measured in units called ohms
• Ohm's Law applies to linear conductors where resistance remains constant
• Resistance causes energy to be dissipated as heat.


  True
• What is the fundamental formula for Ohm's Law?

  $V =$$IR$
• What is the unit of resistance?

  Ohms (Ω)
• The formula to find resistance in Ohm's Law is $R =$$V / I$.


  True
• What is the equivalent resistance of two 6Ω resistors in parallel?

  3Ω
• Ohm's Law assumes that resistance changes with temperature.

  False
• The mathematical formula for Ohm's Law is V=IR
• What type of conductors does Ohm's Law apply to?

  Linear conductors
• Match the variable in Ohm's Law with its definition and unit:

  Voltage (V) ↔️ Potential difference (V)

  Current (I) ↔️ Flow of charge (A)

  Resistance (R) ↔️ Opposition to flow (Ω)
• Ohm's Law is mathematically expressed as V=IR
• What is the formula for Ohm's Law?

  $V =$$IR$
• What does voltage (V) represent in Ohm's Law?

  Potential difference
• The role of current (I) in Ohm's Law is to quantify the flow of electrons
• What is the mathematical expression of Ohm's Law?

  $V =$$IR$
• Match the variables in Ohm's Law with their units:

  Voltage (V) ↔️ Volts (V)

  Current (I) ↔️ Amperes (A)

  Resistance (R) ↔️ Ohms (Ω)
• Resistance dissipates energy as heat in Ohm's Law.

  True
• The unit of voltage is volts
• The unit of current is amperes
• The unit of resistance is ohms
• Arrange the variables in Ohm's Law in their correct order.

  1️⃣ Voltage (V)

  2️⃣ Current (I)

  3️⃣ Resistance (R)
• To find the current, the formula is $I =$$\frac{V}{R}$.


  True