Circuits Quiz

What is Ohm's Law?

• The law that describes the relationship between power, current, and voltage in a circuit.

• The relationship between current, voltage, and resistance in a circuit.

• The study of electrical conductivity in metals.

• The principle that states that the resistance of a conductor is directly proportional to its length and inversely proportional to its cross-sectional area.

Which equation represents Ohm's Law?

• I = V/R

• I = V x R

• I = V - R

• I = V + R

What is the unit of resistance?

• ohm

• watt

• volt

• ampere

In a series circuit, the total resistance is equal to the sum of the individual resistances. True or False?

• True, but only if the circuit is a parallel circuit

• False, the total resistance is always greater than the sum of individual resistances

• False, the total resistance is always less than the sum of individual resistances

• True

In a parallel circuit, the total resistance is always less than the smallest individual resistance. True or False?

• True

• Sometimes true

• It depends on the circuit

• False

What happens to the total resistance in a series circuit as more resistors are added?

• Becomes negative

• Increases

• Stays the same

• Decreases

What happens to the total resistance in a parallel circuit as more resistors are added?

• The total resistance becomes infinite.

• The total resistance decreases.

• The total resistance increases.

• The total resistance stays the same.

What is the formula to calculate the total resistance in a series circuit?

• The total resistance in a series circuit is calculated by multiplying the individual resistances.

• The total resistance in a series circuit is calculated by subtracting the individual resistances.

• The total resistance in a series circuit is calculated by dividing the individual resistances.

• The total resistance in a series circuit is calculated by adding up the individual resistances.

What unit is used to measure voltage?

• Ohms

• Omega

• Volts

• Amps

What kind of circuit is this?

• series
• parallel