Quiz on Parallel Circuits

What is the relationship between the voltage across each resistor in a parallel circuit and the voltage from the dry cell?

• The voltage varies depending on the current.

• The voltage is always zero.

• The voltage across each resistor is the same as the voltage from the dry cell.

• The voltage is different for each resistor.

How is the total current in a parallel circuit calculated?

• I = I₁ - I₂

• I = I₁ * I₂

• I = I₁ + I₂

• I = V/R

What is a key advantage of a parallel circuit?

• The voltage can be adjusted for each appliance.

• Each appliance can be switched on or off separately.

• It requires less wiring than a series circuit.

• All appliances must be switched on together.

What is a disadvantage of a parallel circuit regarding voltage?

• The voltage can be increased by adding more resistors.

• The voltage can be adjusted for each appliance.

• The voltage is the same as the source of voltage.

• The voltage is always higher than in series circuits.

How is effective resistance (R) in a parallel circuit calculated?

• R = R₁ + R₂

• 1/R = 1/R₁ + 1/R₂

• R = V/I

• R = I/V