OCR Physics P3.3 Series and Parallel Circuit Quiz

Lydia is comparing series and parallel circuits in a class practical. Lydia switches on both circuits. Which one is correct?

• The reading on A₁ is less than the reading on A₂.

• The total resistance in circuit B is 6 Ω.

• The p.d. across the 8 Ω is the same in both circuits.

• The p.d. across A₂ is very large

Lydia replaces the 4 Ω resistor with a 6 Ω resistor in each circuit. Choose whether this statement is now true for the two circuits.

"The current from the battery decreases ".

• True for circuit A

• True for circuit B

• True for both

Lydia replaces the 4 Ω resistor with a 6 Ω resistor in each circuit. Choose whether this statement is now true for the two circuits.

"Each unit of charge does less work on the 8 Ω resistor".

• True for circuit A

• True for circuit B

• True for both

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Lydia replaces the 4 Ω resistor with a 6 Ω resistor in each circuit. Choose whether this statement is now true for the two circuits.

"The current in the 8 Ω resistor does not change".

• True for circuit A

• True for circuit B

• True for both

Sarah is investigating the resistance of wires connected in parallel.

She uses three wires that are all the same as each other.

She connects the three wires in parallel and uses a resistance meter to measure the resistance. Sarah thinks that there is a correlation between the number of wires and the resistance of the parallel arrangement.

Explain the correlation in Sarah’s results and describe ways she could improve this investigation. [6 Marks]

Tim also connects resistors in series and parallel.

He sets up this series circuit. Calculate the resistance of R₁.

Tim also connects resistors in series and parallel.

He sets up this series circuit. What is the voltage across R₂?.

Tim sets up this parallel circuit. What is the voltage between points X and Y?

Tim sets up this parallel circuit. All the resistors have the same resistance.

What is the current through point Z?

Jason sets up the following circuit. Jason measured the voltage across the lamp to be 1.5 V, and the current through it to be 0.5 A. What is the power of resistor?