हिंदी

How Does the Short Circuit Form? What is Its Effect? - Science and Technology 1

Advertisements
Advertisements

प्रश्न

How does the short circuit form? What is its effect?

टिप्पणी लिखिए
Advertisements

उत्तर

  1. The household electrical connections mainly consist of live, neutral and earth wires.
  2. The potential difference between live and neutral wires is around 220 V.
  3. Sometimes, due to fault in the electrical appliances or damage of the insulating coating around the two wires i.e., neutral and live, the two wires come in contact with each other and large current flows through them causing short circuit.
  4. Large amount of heat is produced due to flow of this large current. Any inflammable material like wood, plastic, cloth, etc. present around the short-circuited place can catch fire.
shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 4: Effects of electric current - Solve the following Questions

APPEARS IN

एससीईआरटी महाराष्ट्र Science and Technology 1 [English] 10 Standard SSC
अध्याय 4 Effects of electric current
Solve the following Questions | Q 2
बालभारती Science and Technology 1 [English] Standard 10 Maharashtra State Board
अध्याय 4 Effects of electric current
Exercises | Q 6 | पृष्ठ ६०

संबंधित प्रश्न

What do the following symbols mean in circuit diagrams? 


Draw circuit symbols for 

A closed switch


Who will spend more electrical energy? 500 W TV Set in 30 mins, or 600 W heater in 20 mins?


Observe the following figure which bulb get fuse?

 


Resistances R1, R2, R3 and R4 are connected as shown in the figure. S1 and S2 are two keys. Discuss the current flowing in the circuit in the following cases.

  1. Both S1 and S2 are closed. 
  2. Both S1 and S2 are open.
  3. S1 is closed but S2 is open. 

In an electric circuit, electron flow a from of point of ______ potential to the point of ______ potential.


What do you understand by an electric circuit?

Distinguish between a closed circuit and an open circuit, with the use of suitable labelled diagrams. 


Write the condition required for a circuit to be a closed circuit. 


Answer the following question.
With the help of a suitable circuit diagram prove that the reciprocal of the equivalent resistance of a group of resistances joined in parallel is equal to the sum of the reciprocals of the individual resistances. 


Draw a neat diagram showing a closed electric circuit.


Name the instrument used to control current in an electric circuit.


Explain the following:
Open circuit


Explain the following:
Closed circuit


What is open circuit?


If you touch an electric wire carrying current you get a shock, but if on the same wire the birds sit they do not get any shock/current. Explain why?


What is the potential difference?


Flow of electricity through a closed circuit is _____.


In which among the following circuits does the bulb glow?


In the circuit shown, which switches (L,M or N) must be closed to light up the bulb?


Fuse is


What is electric circuit?


The wiring in a house consists of ______ circuits.


A child has drawn the electric circuit to study Ohm’s law as shown in Figure. His teacher told that the circuit diagram needs correction. Study the circuit diagram and redraw it after making all corrections.


In an electric circuit a fuse is a ______ ______ to prevent possible fire.


Draw the symbols of the following circuit components.

Switch in off position


Observe the circuit given:

1. Would any of the bulbs glow when the switch is in the ‘OFF’ position?

2. What will be the order in which the bulbs A, B, and C will glow when the switch is moved to the ‘ON’ position?


In the above circuit, if the current reading in the ammeter A is 2A, what would be the value of R1


In the following arrangement shown in the following figure, the bulb will not glow if the ends A and B are connected with


In which of the following circuits A, B and C given in the following figure, the cell will be used up very rapidly?


Paheli connected two bulbs to a cell as shown in the following figure.


She found that filament of bulb B is broken. Will the bulb A glow in this circuit? Give reason.


Boojho has a cell and a single piece of connecting wire. Without cutting the wire in two, will he be able to make the bulb glow? Explain with the help of a circuit diagram.


Overloading of electric circuits can lead to short-circuiting.


Name the device which is used to measure the strength of the electric current in an electric circuit.


A complete circuit is left on for several minutes, causing the connecting copper wire to become hot. As the temperature of the wire increases, the electrical resistance of the wire


How is Joule's law effect useful in electric circuits where fuse is used as a safety device?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×