NCERT Class VI Science Solutions: Chapter 12-Electricity and Circuits Part 2

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Question 7:

Would the bulb glow in the circuit shown in Fig.

Images for the bulb glow in the circuit

The Bulb Glow in the Circuit

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Answer:

Both the wire are connected to only one terminal of the bulb, so current will not flow through the bulb and it would not glow. We should make a correction as follows:

Images for the wire are connected to only one terminal of th …

The Wire Are Connected to Only One Terminal of the Bulb

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Question 8:

Using the "conduction tester" on an object it was found that the bulb begins to glow. Is that object a conductor or an insulator? Explain.

Answer:

Since the object allows current to flow and completes the circuit and makes bulb to glow. It means the object is a conductor of electricity.

Question 9:

Why should an electrician use rubber gloves while repairing an electric switch at your home? Explain.

Answer:

Electricians frequently touch copper wires or they may accidentally come in contact with live wires (wires carrying current). Since human body is a good conductor, electricians may get shock. Rubber is an insulator. To prevent themselves from electric shock or flow of current, the electricians use rubber gloves while repairing.

As showing in images is a electricians use rubber gloves whi …

The Electricians Use Rubber Gloves While Repairing

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Question 10:

The handles of the tools like screwdrivers and pliers used by electricians for repair work usually have plastic or rubber covers on them. Can you explain why?

Answer:

Without the help of insulators, the use of electrical tools like pliers and screwdrivers will give electric shock to user. Wood and plastics are insulators and help in avoiding direct contact with electric current. When electricians touch these live electric wires with these tools covered with plastic or rubber, current does not flow in their body making safer them from any accident.

As showing in images is a result for screwdrivers and pliers

Screwdrivers and Pliers

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