Conductors and Insulators Quiz - CBSE Class 6 Science

Free practice quiz: Conductors and Insulators (CBSE Class 6 Science). 18 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. Which of the following is a good conductor of electricity?

   1. Wood
   2. Rubber
   3. Copper
   4. Plastic
   Show answer

   Answer: C. Copper

   Copper is a good conductor of electricity as it allows electric current to flow easily through it.

2. Which of the following is not a property of a conductor?

   1. Insulates electricity
   2. Allows electricity to flow
   3. Has low resistance
   4. Transfers heat
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   Answer: A. Insulates electricity

   Conductors allow electricity to flow, whereas not being a conductor means it insulates electricity.

3. Which of the following pairs are insulators?

   1. Copper and Steel
   2. Glass and Plastic
   3. Gold and Silver
   4. Iron and Aluminum
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   Answer: B. Glass and Plastic

   Glass and Plastic are both insulators, while the other pairs listed include conductive materials.

4. A wire has a resistance of 10 ohms. If the voltage across it is 20 volts, what is the current flowing through the wire?

   1. 2 Amperes
   2. 0.5 Amperes
   3. 10 Amperes
   4. 5 Amperes
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   Answer: A. 2 Amperes

   Using Ohm's law, V = IR, we can rearrange to solve for I = V / R. So, I = 20V / 10Ω = 2A.

5. Which insulator is commonly used in overhead power lines?

   1. Glass
   2. Rubber
   3. Plastic
   4. Paper
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   Answer: A. Glass

   Glass insulators are used in overhead power lines because they can withstand high voltages and weather conditions.

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