मराठी

Why is parallel arrangement used in domestic wiring? - Science

Advertisements
Advertisements

प्रश्न

Why is parallel arrangement used in domestic wiring?

थोडक्यात उत्तर
Advertisements

उत्तर

Parallel arrangement is used in domestic wiring because of the following reasons -

  1.  Net resistance of the electric circuit decreases in parallel connection as compared to series connection due to which heat loss is reduced.
  2. Potential difference across each electrical device remains same i.e 220 V due to which all the electrical devices work upto their maximum potential.
  3. Each electrical device can be operated independently.
  4. If one electrical device stops working still other electrical devices continue to work properly. 
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 12: Electricity - Short Answer Questions [पृष्ठ ९५]

APPEARS IN

एनसीईआरटी एक्झांप्लर Science [English] Class 10
पाठ 12 Electricity
Short Answer Questions | Q 27. | पृष्ठ ९५

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

Why are the conductors of electric heating devices, such as bread-toasters and electric irons, made of an alloy rather than a pure metal?


Give two reasons why nichrome alloy is used for making the heating elements of electrical appliances.


Why does the connecting cord of an electric heater not glow hot while the heating element does?


An electric iron of resistance 20 ohms draws a current of 5 amperes. Calculate the heat produced in 30 seconds.


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?


Name the material which is used for making the filaments of an electric bulb.


Why does tungsten metal used to make solenoid type coil in an electric bulb?


What is used to turn off the sudden increase in current in the electrical circuit of the house nowadays?


Name some devices that run using heat effect of electric current


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.

  1. Will the bulb in the two circuits glow with the same brightness? Justify your answer.
  2. Now let one bulb in both the circuits get fused. Will the rest of the bulbs continue to glow in each circuit? Give reason.

What is Joule’s heating effect? How can it be demonstrated experimentally? List its four applications in daily life.


Name two electric devices for each where

  1. heating effect of current is used and
  2. magnetic effect of current is used.

What is an electric fuse made up of?


Fuse is a strip of alloy wire which is made up of lead and tin with a very low ______.


An electrochemical cell converts ______ energy into ______ energy.


In the electric equipment producing heat like iron, electric heater, boiler, toaster etc., an alloy such as nichrome is used, not pure metals.


State the law that explains the heating effect of current with respect to the measurable properties in an electrical circuit.


Anannya responded to the question: Why do electrical appliances with metallic bodies are connected to the mains through a three-pin plug, whereas an electric bulb can be connected with a two-pin plug?

She wrote: Three-pin connections reduce heating of connecting wires.

  1. Is her answer correct or incorrect? Justify.
  2. What is the function of a fuse in a domestic circuit?

When a current I flows through a wire of resistance R for time t then the electrical energy produced is given by ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×