Stage 4 Science Unit 5 Worksheet PDF | PDF | Electrical Conductor ... - Free Printable

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1. a- When the switch is turned on in a closed circuit, the bulb lights up because the circuit is complete, allowing electricity to flow from the battery through the bulb, causing it to glow.

b- Electricity cannot flow in an open circuit because the switch is off, creating a break in the circuit. This break prevents the flow of electric current, so the bulb does not light up.

2. Appliances have a plastic-covered plug because plastic is an insulator. It does not conduct electricity, which prevents electric shocks and protects users from coming into contact with live electrical parts.

Parent Tip: Review the logic above to help your child master the concept of electric circuit worksheet.

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