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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.
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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.
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संबंधित प्रश्न
Draw in your notebook the symbols to represent the following components of electrical circuits: connecting wires, switch in the ‘OFF’ position, bulb, cell, switch in the ‘ON’ position, and battery.
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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.

In the circuit shown in figure would any of the bulbs glow when the switch is in the ‘OFF’ position?

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What is a battery?
You are provided with a torch bulb, a cell and two plastic coated f metal wires. Draw a diagram to show a complete circuit to light the bulb.
State the function of each of the following in an electric circuit and draw its symbolic representation: (1) Switch and (2) Cell.
______ is an instrument used in electric circuits to find the quantity of current flowing through the circuit.
A combination of two or more cells is called a ______.
