Practice Series Circuit Test

Calculate the current when the potential difference is 10V and resistance is 2Ω

• 5mA
• 5A
• 20A
• 0.2A

How many volts is produced by three cells of 3 V each in series?

• 3V

• 1.5V

• 9V

• 27V

If you increase the voltage of a circuit, what happens?

• Current decreases
• Current increases
• Electrons disappear
• Bulbs get dimmer

what is this symbol for?

• light bulb
• switch
• battery
• resistor

Total resistance in a parallel circuit

• R_{t =} R₁ + R₂ + R₃ ...

• 1/R_{t =} 1/R₁ + 1/R_{2 ...}

• R_t = R₁ X R₂ / R₁ + R_{2 ...}

• R_t = R_N / R_V

Assume that the voltage of the battery is 9 V and that the three resistors are identical. What is the potential difference across each resistor?

• 12 V

• 0 V

• 3 V

• 4 V

When another resistor is added to a parallel circuit, the total current...

• goes up.
• goes down.
• is unaffected.

What will happen if one light bulb is removed from this circuit?

• The other bulbs will go out.
• The other bulbs will get brighter.
• The other bulbs will get dimmer.
• The battery will become stronger.

Does this statement best describe a parallel or a series circuit.
 
When more light bulbs are added they all remain bright. 

• Parallel circuit
• Series circuit

In which of these two circuits is the current the same at all points? 

• A
• B