Advertisements
Advertisements
प्रश्न
Why is parallel arrangement used in domestic wiring?
उत्तर
Parallel arrangement is used in domestic wiring because of the following reasons -
- Net resistance of the electric circuit decreases in parallel connection as compared to series connection due to which heat loss is reduced.
- Potential difference across each electrical device remains same i.e 220 V due to which all the electrical devices work upto their maximum potential.
- Each electrical device can be operated independently.
- If one electrical device stops working still other electrical devices continue to work properly.
APPEARS IN
संबंधित प्रश्न
State four most common electrical appliances based on heating effect of electric current. Why do we use finely heated platinum wire in surgery?
Why does the connecting cord of an electric heater not glow hot while the heating element does?
A heating coil has a resistance of 200 Ω. At what rate will heat be produced in it when a current of 2.5 A flows through it?
A resistance of 25 Ω is connected to a 12 V battery. Calculate the heat energy in joules generated per minute.
True or False – If False give the correct answer
The fuse wire does not melts whenever there is overload in the wiring.
Three incandescent bulbs of 100 W each are connected in series in an electric circuit. In another circuit another set of three bulbs of the same wattage are connected in parallel to the same source.
- Will the bulb in the two circuits glow with the same brightness? Justify your answer.
- Now let one bulb in both the circuits get fused. Will the rest of the bulbs continue to glow in each circuit? Give reason.
It would cost a man Rs. 3.50 to buy 1.0 kW h of electrical energy from the Main Electricity Board. His generator has a maximum power of 2.0 kW. The generator produces energy at this maximum power for 3 hours. Calculate how much it would cost to buy the same amount of energy from the Main Electricity Board.
Copper wire offers very little ______ and does not get heated up quickly.
An electric fuse is a wire made up of a material having ______ melting point.
Explain why fuse wire is always connected in a series arrangement.
