P5 Electrical Systems
Electrical conductors and insulators
This science revision note aims to help your child:
– recall the functions of electrical conductors and insulators.
– Imagine which pathway electric current flow in different circuits.
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Ava set up a circuit which included 4 different objects (A, B, D and D), as shown below.
She noted that only Bulbs W, X and Y lighted up. Which objects are definitely electrical conductors?
1) B and C only
2) A and D only
3) A, B and D only
4) A, C and D only
STEP 1
Electricity will only be able to flow through objects that are electrical conductors. Let’s go through each of the options and highlight the circuit formed to determine which bulbs light up.
Tip: Use a pencil to draw the circuit formed when the respective switches are closed to easily visualise the circuit!
STEP 2
Analyse each option.
FINALLY, choose the correct answer.
The answer is 3.
Note: You need to practise similar questions to visualise how electrical current flows.
Once you’ve got enough training, you can choose the correct answer much more quickly! 🙂
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