P6 Chapter 9 - More About Electrical Circuit

Fauziah used new batteries, two identical bulbs and two switches, X and Y to set up an electric circuit. She observed the number of bulbs that lit up when she opened or closed the switches. She recorded her observations in the table below. All the components were in working condition. Which of the circuits shown below did Fauziah set up?

• 
• 
• 
• 

Which of these symbols represents a battery in a circuit diagram?

• 
• 
• 
• 

Which of the electric circuits below show batteries arranged in series?

• 
• 
• 
• 

Which of the electric circuits below shows bulbs arranged in parallel?

• A and B only

• A and D only

• B and C only

• B and D only

Fitz wants to investigate if the number of batteries in an electric circuit will affect the brightness of the bulbs. All the components are identical and working properly. Which two set-ups should Fitz use in order to ensure a fair test?

• P and Q

• P and S

• Q and R

• R and S

Jimmy wants to find out how the brightness of a bulb is affected by the arrangement of the bulbs in a circuit. He conducted an experiment using four circuits, A, B, C and D. Each circuit was made up of four identical bulbs connected to a battery using wires. Without considering the numbering of the bulbs, which circuits have the same arrangement of bulbs?

• B and C only

• A and D only

• A and D, B and C

• A and B, C and D

What are the factors that affect the brightness of a bulb in a circuit?

 (1) Number of bulbs

 (2) Number of batteries

 (3) Presence of a switch

 (4) Arrangement of bulbs

• 1, 2 and 3 only

• 1, 2 and 4 only

• 2, 3 and 4 only

• 1, 2, 3 and 4

In which circuit, A, B, C or D, will the bulb(s) be the brightest?

• Circuit A

• Circuit B

• Circuit C

• Circuit D

What is the advantage of arranging bulbs in parallel in an electric circuit?

• It uses more wires in the circuit.

• If one bulbs fuses, the other bulbs will not light up.

• If one bulb fuses, the other bulbs will still light up.

• The bulbs arranged in parallel will not light up with the same brightness.

Study the four electric circuits below. Which one of the circuits has the brightest bulbs?

• 
• 
• 
•