Series and Parallel Circuits – Practice

Questions:

1) Below is a simple series circuit:

a) Calculate the effective equivalent resistance of the circuit:

b) Calculate the current flowing through the circuit:

c) Calculate the potential difference across R2:

2) Below is a simple parallel circuit:

a) Calculate the effective equivalent resistance of the circuit:

b) Calculate the total current flowing through the circuit:

c) What is the potential difference across R1:

d) What is the current through R2: 

3) Below is a complex circuit:

a) Calculate the effective equivalent resistance of the circuit:

b) Calculate the total current flowing through the circuit:

c) What is the potential difference across each resistor?

d) What is the current through each resistor?

Quick Answers:

1a) 90Ω    b) 0.1 amps    c) 5 volts

2a) 7.5Ω     b) 20 amps     c) 150V     d) 5 amps

3a) 16Ω      b) 15 amps      

c) V1 = 75V,     V2 and 3 = 135V,     V4 = 30V   

d) I1 = I4 = 15 A,     I2 = 3.75A,     I3 = 11.25A

Worked Answers: