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प्रश्न
What are conductors and insulators of electricity? Give two examples of each.
Write short notes on conductors and insulators.
उत्तर १
The substances which allow electric current to flow through them easily are called conductors. Examples: Impure water and metals.
The substances which do not allow the electric current to flow through them are called insulators. Examples: Rubber and wood.
उत्तर २
- Conductors:
The rate of flow of electric charges in a circuit is called electric current. The materials which allow electric charges to pass through them are called conductors.
Examples: Copper, iron, aluminum, impure water, earth, etc.
- Iniulaton (Non-Conductors):
The materials which do not allow electric charges to pass through them are called insulators or non-conductors. Examples: plastic, glass, wood, rubber, china clay, ebonite, etc.
संबंधित प्रश्न
Write true or false for a given statement.
All metals are conductors of electricity.
Fill in the blank
_______ pass electricity through them.
Select the correct option:
Which of the following is the best conductor of electricity?
What do you understand by the term electric cell?
l-V graph is shown for a good conductor. What does the slope of the graph represent?
Identify conductors and insulators from the following: Eraser, paper, matchstick, copper wire, pencil lead, polythene
______ are the materials which allow electric current to pass through them.
Assertion (A): It is very easy for our body to receive electric shock.
Reason (R): Human body is a good conductor of electricity.
Silver is a good conductor but it is not preferred for making electric wires. Why?
Search ten words in the given word grid and classify them as conductors and insulators
Picture based Question
Three conductors are joined as shown in the diagram
The current in conductor RS is 10 A. The current in conductor QR is 6 A. What will be the current in conductor PR
- 4 A
- 6 A
- 10 A
- 16 A
Electric current can flow through metals.
Electric current can pass through a sheet of thermocol.
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
Why should an electrician use rubber gloves while repairing an electric switch at your home? Explain.
Electricians wear rubbers gloves because it is ______.
Why is a layer of zinc coated over iron?
Insulators do not carry electric currents because they do not have free electrons.
Consider the following circuit:
The potential drop across the 20 kΩ resistor would be:
