7.3 Ohm's Law

What are the two main factors that affect the current flowing through a circuit?

• Resistance and voltage

• Temperature and pressure

• Length and width of the wire

• Color and shape of the circuit

Where does a circuit’s resistance primarily come from?

• Resistors plugged into the circuit

• The color of the wires

• The length of the battery

• The size of the generator

What is the relationship between resistance and current in a circuit, assuming voltage is constant?

• Inversely proportional

• Directly proportional

• No relationship

• Exponentially related

What is the primary function of resistors in a circuit?

• To limit the current

• To provide voltage

• To generate electricity

• To store energy

Current is directly proportional to which of the following?

• Resistance

• Voltage

• Power

• Capacitance

What happens to the current if the voltage in a circuit increases?

• The current decreases.

• The current stays the same.

• The current increases.

• The current becomes zero.

Which equation correctly represents Ohm’s Law?

• I = V + R

• I = V × R

• I = V / R

• I = R / V

How can voltage be calculated using Ohm’s Law?

• V = I / R

• V = I × R

• V = R / I

• V = I + R

What does the equation I = V / R represent?

• The relationship between power, voltage, and resistance.

• The relationship between current, voltage, and resistance.

• The relationship between energy, voltage, and resistance.

• The relationship between charge, voltage, and resistance.

Which variable is represented by "R" in Ohm’s Law?

• Voltage

• Current

• Resistance

• Power