# 8th Science Refresher course Topic 4 - Answer key

## Lesson 4 - Electricity - Refresher course Answer

#### EVALUATION

**1. Define Electric Current**

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**2. What is the SI unit of resistance ?**

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**3. Draw a simple electric circuit.**

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**4. Give four examples of conductors.**

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**5. Give four examples of insulators.**

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**6. Is air a conductor of electricity ? Why?**

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**7. What is the full form of LED ?**

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**8. Which part of an atom is responsible for flow of current?**

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