WorksheetsConductors and Insulators
Total questions: 7
Worksheet time: 9mins
When a live wire touches a metal tube, you should avoid touching the metal tube because
A. Metal tube has sharp edges
B. Live wire will tangle in your arm
C. Metal tube insulates the electricity from the live wire
D. Electricity from the live wire flows through the metal tube
All of the electrical wires are covered with a plastic covering because plastic is
A. an insulator
B. durable and flexible
C. able to keep its shape
D. less expensive than metal
Why do electricians wear rubber gloves when repairing electrical connections?
A. Rubber gloves produce electricity
B. Rubber gloves keep electricians dry
C. Rubber gloves insulate the electrician
D. Rubber gloves create an electrical circuit
Anton constructed a simple circuit. He wanted to light up the bulb. Which of the following objects should be connected to points X and Y?
A. Coin and plastic straw
B. Graphite and metal clip
C. Eraser and aluminum foil
D. Iron nail and rubber band
You notice that there is an open wire in the extension cord. What material would be safest to use as an insulator to cover the open wire?
A. Aluminum foil
B. Copper wire
C. Rubber band
D. Silver spoon
Explain the difference between a conductor and an insulator.
Give three objects which are good conductors of electricity.
