DC Circuits 3

​Watch this video (2 mins)

​Make sure to know:

• ​What is a parallel connection.

Multiple Choice

What kind of circuit is this?

• Series
• Consecutive
• Parallel
• Training

Multiple Choice

What kind of circuit is this?

• Series
• Consecutive
• Parallel
• Training

​Watch this video (5 mins)

​Make sure to know:

• ​Parallel circuit rule for current.

• ​How resistance of a branch affects the current.

Multiple Choice

What is the current at point X?

• 2 A

• 1 A

• 3 A

• 0.5 A

Multiple Choice

What is the current at point Y?

• 2 A

• 1 A

• 3 A

• 0.5 A

Multiple Choice

What is the current at point X?

• 5 A

• 2 A

• 7 A

• 9 A

Multiple Choice

Assuming the resistors have the same resistance. What is the current at point Y?

• 5 A

• 2 A

• 7 A

• 9 A

Multiple Choice

Assuming the resistors have the same resistance. What is the current at point Z?

• 5 A

• 2 A

• 7 A

• 9 A

Multiple Choice

Assuming the two light bulbs are identical. What is the current at point X?

• 5 A

• 2.5 A

• 3 A

• 2 A

Multiple Choice

Assuming the two light bulbs are identical. What is the current at point Y?

• 5 A

• 2.5 A

• 3 A

• 2 A

Multiple Choice

Assuming the two light bulbs are identical. What is the current at point Z?

• 5 A

• 2.5 A

• 3 A

• 2 A

Multiple Choice

What is the current at point Y?

• 10 A

• 7 A

• 5 A

• 3 A

Multiple Choice

What is the current at point X?

• 10 A

• 7 A

• 5 A

• 3 A

​Watch this video (1 min)

​Make sure to know:

• ​Parallel circuit rule for voltage (EMF & potential difference).

Multiple Choice

What is the potential difference across resistor X?

• 6 V

• 12 V

• 18 V

• 0 V

Multiple Choice

What is the EMF across power supply X?

• 1.5 V

• 3.0 V

• 4.5 V

• 6.0 V

Multiple Choice

What is the potential difference across light bulb Y?

• 1.5 V

• 3.0 V

• 4.5 V

• 6.0 V

​Watch this video (3 mins)

​Make sure to know:

• How to calculate effective resistance of resistors in parallel.

Multiple Choice

What is the total resistance of this circuit

• 0.18Ω

• 5.45Ω

• 60Ω

• 6000Ω

Multiple Choice

Find the effective resistance of this circuit.

• 0.012Ω

• 85.9Ω

• 400Ω

• 150Ω