# Physics Electricity & Circuit Part 12 (Question 2) Class 6 VI | Summary and Q&A

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March 11, 2016
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LearnoHub - Class 11, 12
Physics Electricity & Circuit Part 12 (Question 2) Class 6 VI

## TL;DR

Learn about the basics of electric circuits, conductivity, and why insulators like rubber and plastic are important.

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### Q: Why does replacing the safety pin with an eraser prevent the bulb from glowing?

The eraser, being made of rubber, is an insulator and does not allow the flow of electric current. Without current flowing through the circuit, the bulb will not glow.

### Q: How can the circuit be rectified in order to make the bulb glow?

The positive terminal of the battery should be connected to the base terminal of the bulb. This way, the current can flow through the circuit and the bulb will glow.

### Q: What is a conduction tester circuit?

A conduction tester circuit is created by using a bulb and an object to check if the object is a conductor or an insulator. If the bulb glows when the object is included in the circuit, it means the material allows current to flow, indicating it is a conductor.

### Q: Why do electricians use rubber gloves while repairing electric switches?

Electricians use rubber gloves to protect themselves from electric shock. Rubber is a poor conductor of electricity and does not allow current to pass through it, keeping the electrician safe from harm.

## Summary & Key Takeaways

• Completing an electric circuit by connecting the ends of a key to a bulb and a battery causes the bulb to glow.

• If a safety pin, made of metal, is replaced with an eraser, made of rubber (an insulator), the circuit will not be completed, and the bulb will not glow.

• In order to make the bulb glow, the positive terminal of the battery should be connected to the base terminal of the bulb.