Advertisements
Advertisements
प्रश्न
An electrician is carrying out some repairs in your house. He wants to replace a fuse by a piece of wire. Would you agree? Give reasons for your response.
Advertisements
उत्तर
- No. The electrician cannot be allowed to replace the fuse in the house with a piece of wire. This is because every wire cannot be used as a fuse filament.
- A fuse filament must have a low melting point such that it could melt and break in response to a large amount of current. Most of the wires have high melting points.
- So, we should always use ISI-marked fuses in our houses to prevent short circuits.
APPEARS IN
संबंधित प्रश्न
To make a battery of two cells, the negative terminal of one cell is connected to the negative terminal of the other cell.
Zubeda made an electric circuit using a cell holder shown in Figure, a switch and a bulb. When she put the switch in the ‘ON’ position, the bulb did not glow. Help Zubeda in identifying the possible defects in the circuit.
Select the correct alternative
Electricity can flow through
The diagram given below shows a bulb connected with a cell having terminals A and B. Mark the direction of current in the bulb.
Draw a circuit diagram for a bulb connected to a cell with a switch. Mark arrow in the diagram to indicate the direction of flow of current.
In the circuit shown in figure, what will be the order in which the bulbs A, B and C will glow when the switch is moved to the ‘ON’ position?
______ are used to connect devices.
A combination of two or more cells is called a ______.
Unscramble the following words:
HICWTS
Visit an electric shop. Request an electrician to show you the various types of fuses and MCB and to explain how they work.
