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Observe the Following Figure Which Bulb Get Fuse? - Science and Technology 1

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प्रश्न

Observe the following figure which bulb get fuse?

 

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उत्तर

Bulb A 

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
2018-2019 (March) Balbharati Model Question Paper Set 3

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  

 a battery of three cells 


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?


Explain with the help of a labelled circuit diagram how you will find the resistance of a combination of three resistors, or resistance R1, R2 and R3, joined in parallel. Also mention how you will connect the ammeter and the voltmeter in the circuit when measuring the current in the circuit and the potential difference across one of the three resistors of the combination.


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?


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. 

The accompanying figure shows some electrical appliances connected in a circuit in a house. Answer the following questions.

  1. By which method are the appliances connected?
  2. What must be the potential difference across individual appliances?
  3. Will the current passing through each appliance be the same? Justify your answer.
  4. Why are the domestic appliances connected in this way?
  5. If the T.V. stops working, will the other appliances also stop working? Explain your answer.

A battery is to be formed by joining 3 dry cells with connecting wires. Show how will you connect the wires by drawing a diagram.


What do you understand by an electric circuit?

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


Draw a neat diagram showing a closed electric circuit.


How is a voltmeter connected in a circuit?

Explain the following:
Open circuit


Explain the following:
Closed circuit


What is open 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.


Tabulate the different components of an electric circuit and their respective symbols.


Rahul wants to make an electric circuit. He has a bulb, two wires, a safety pin, and a piece of copper. He does not have any electric cell or battery. Suddenly he gets some idea. He uses lemon instead of a battery and makes a circuit. Will the bulb glow?


In which among the following circuits does the bulb glow?


In the circuit diagram below, 10 units of electric charge move past point x every second What is the current in the circuit ______.


What is electric circuit?


When a circuit is open, _____ cannot pass through it.


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


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


What are the types of electric circuits?


In the following circuits (Figure), heat produced in the resistor or combination of resistors connected to a 12 V battery will be

(i) (ii) (iii) 

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.


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.


In an electric circuit, the current starts from ______.


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.


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


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.


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