MCQ
Why are overhead cables not insulated?
- ✓Because air is a bad conductor of electricity.
- BBecause air is a good conductor of electricity.
- CBare wires conduct electricity better.
- DBoth $(b)$ and $(c).$
✓
Answer
Correct option: A.
Because air is a bad conductor of electricity.
Overhead cables need not be insulated because air is a bad conductor of electricity.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The ingredients of kheer cooked at house are obtained from:
In our country, people do not have enough food to eat, what should be our duty ?
Which of the following animals does not haveteeth?
Which of these is the longest?
Paheli is running short of connecting wires. To complete an electric circuit, she may use a
An organism that is fully grown is called
Study the given Venn diagram, Which of the motions described by different bodies are most likely to be $I, II$ and $III?$
→Choose odd from the following.
Directions: Read the passage $(s)$ given below and answer the questions that follow. Passage - $2$ Manisha has to do a project on 'Fibres to Fabrics'. In this project she has to make a list of items from her home that are made up of different fibres and she has to classify them into plant, animal or synthetic fibres on the basis of the fabric from which these item are made up of. She made following list of items. Bed-sheets, Sweater, Jeans, School bag. Table Cloth, Blanket, Curtains. Fabric of school bag, curtains and table cloth is classified into which category?
→Observe the given figure.
What is the purpose of this experiment?
What is the purpose of this experiment?