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Write scientific reason. It is beneficial to carry electrical energy in AC form as it is carried over long distances. - Science and Technology 1

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प्रश्न

Write scientific reason.

It is beneficial to carry electrical energy in AC form as it is carried over long distances.

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उत्तर

  1. There is minimum power loss, when electrical energy is carried over long distances in the form of AC.
  2. Hence, it is beneficial to carry electrical energy in AC form as it is carried over long distances.
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अध्याय 4: Effects of electric current - Write scientific reasons

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एससीईआरटी महाराष्ट्र Science and Technology 1 [English] 10 Standard SSC
अध्याय 4 Effects of electric current
Write scientific reasons | Q 6

संबंधित प्रश्न

Draw a schematic diagram of a circuit consisting of a battery of three cells of 2 V each, a 5 Ω resistor, an 8 Ω resistor, and a 12 Ω resistor, and a plug key, all connected in series.


What do the following symbols mean in circuit diagrams? 


Draw circuit symbols for 

fixed resistance


Draw circuit symbols for variable resistance


What is a circuit diagram


Draw the labelled diagram of an electric circuit comprising of a cell, a resistance, an ammeter, a voltmeter and a closed switch (or closed plug key). Which of the two has a large resistance : an ammeter or a voltmeter?


Draw a circuit diagram to show how 3 bulbs can be lit from a battery so that 2 bulbs are controlled by the same switch the third bulb has its own switch. 

 


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


Find the odd one out and justify it.
Fuse wire, M.C.B., Rubber Gloves, Generator


Two tungsten bulbs of power 50 W and 60 W work on 220 V potential difference. If they are connected in parallel, how much current will flow in the main conductor?


The following figure shows the symbols for components used in the accompanying electrical circuit. Place them at proper places and complete the circuit.

Which law can you prove with the help of above circuit?


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


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


Draw a neat diagram showing a open electric circuit.


How is a voltmeter connected in a circuit?

Explain the following:
Open circuit


Explain the following:
Closed circuit


Find the odd one out and give its explanation.


How much is the potential difference between live and neutral wires?


In the given circuit diagram, which of the given switch(s) should be closed. So that only bulb A glows.


State whether true or false. If false, correct the statement.

Ammeter is connected in parallel in any electric circuit.


In a simple circuit, why does the bulb glow when you close the switch?


What is the role of the earth wire in domestic circuits?


Explain about domestic electric circuits. (circuit diagram not required)


A device that is used to break an electric circuit is called ______.


The rate of flow of electric charges in a circuit is called ______.


______ is a kind of fish which is able to produce an electric current.


In a circuit, if the key is in open (off) condition, then electricity will not flow.


In an electrical circuit two resistors of 2 Ω and 4 Ω respectively are connected in series to a 6 V battery. The heat dissipated by the 4 Ω resistor in 5 s will be


Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of 2 Ω in series with a combination of two resistors (4 Ω each) in parallel and a voltmeter across the parallel combination. Will the potential difference across the 2 Ω resistor be the same as that across the parallel combination of 4 Ω resistors? Give reason.


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?


The ______ is a species of fish that can give electric shocks of up to six hundred fifty watts of electricity.


Write a short note on the different electrical circuits.


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


Assertion: People struck by lightning receive a severe electrical shock.

Reason: Lightning carries very high voltage.


Set up the circuit shown in Figure again. Move the key to ‘ON’ position and watch carefully in which direction the compass needle gets deflected. Switch ‘OFF’ the current. Now keeping rest of the circuit intact, reverse the connections at the terminal of the cell. Again switch ‘on’ the current. Note the direction in which the needle gets deflected. Think of an explanation.


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