2.3 Series and Parallel Circuits

The picture shows an electrical circuit. This circuit is a series circuit because: 

• It has 3 light bulbs.
• The same current flows through all three light bulbs.
• It uses a single battery.
• The electrical current is divided between the three light bulbs.

The total resistance in this circuit is

• 100 Ω

• 450 Ω

• 400 Ω

• 30 Ω

The total current through this circuit is

• 0.02 A

• 0.09 A

• 50 A

• 9 A

The potential difference across the 300 Ω resistor is

• 6 V

• 9 V

• 2 V

• 30 V

What is the total resistance across this circuit?

• 3 kΩ

• 10 kΩ

• 13 kΩ

• 18 kΩ

As resistors are added in series to a circuit, the total resistance will...

• increase
• decrease
• stay the same

As the resistance of a circuit increases, the current will...

• increase
• decrease
• stay the same

In a parallel circuit which of the following is the same value throughout the circuit?

• Voltage
• Current
• Resistance
• Charge

The current going through the 45 Ω resistor is

• 0.05 A

• 0.2 A

• 0.1 A

• 5 A

The total current going through the battery of this circuit is

• 0.35 A

• 0.0286 A

• 0 A

• 9 A