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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

What is used to turn off the sudden increase in current in the electrical circuit of the house nowadays? - Science and Technology 1

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प्रश्न

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

एका वाक्यात उत्तर

उत्तर

Nowadays, Miniature Circuit Breakers (MCB) is used to turn off the sudden increase in current in the electrical circuit of the house.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Effects of electric current - Answer in one sentence.

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संबंधित प्रश्‍न

An electric iron of resistance 20 Ω takes a current of 5 A. Calculate the heat developed in 30 s.


What is nichrome? State its one use.


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


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


An electric fuse works on the:
(a) chemical effect of current
(b) magnetic effect of current
(c) lighting effect of current
(d) heating effect of current


If the current flowing through a fixed resistor is halved, the heat produced in it will become:


How does the wire in the filament of a light bulb behave differently to the other wires in the circuit when the current flows?

What property of the filament wire accounts for this difference?


Two exactly similar heating resistances are connected (i) in series, and (ii) in parallel, in two different circuits, one by one. If the same current is passed through both the combinations, is more heat obtained per minute when they are connected in series or when they are connected in parallel? Give reason for your answer.


Identify the figure and give its use.


Statement 1 : Electric current ( flow of electrons ) creates heat in the resistor.
Statement 2 : Heat in the resistor is created according to the rule of energy conservation.
Explain Statement 1 with the help of Statement 2.


Statement 1 : Electric current ( flow of electrons ) creates heat in the resistor.
Statement 2 : Heat in the resistor is created according to the rule of energy conservation.
Explain Statement 1 with the help of Statement 2.


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


Solve the following question.
Compute the heat generated while transferring 96000 coulombs of charge in two hours through a potential difference of 40 V.


A coil of an alloy _______ is used in electric heater cooker as a resistor.


What is the heating effect of electric current?


Write scientific reason.

A coil made up of alloy Nichrome is used in the electric heater cooker as a resistor.


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Explain the application of heating effect of electric current in an electric bulb with a diagram.


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An electric bulb is connected to a 220 V generator. The current is 0.50 A. What is the power of the bulb?


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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

(i) the heating effect of current is used and

(ii) the magnetic effect of current is used.


Paheli took a wire of length of 10 cm. Boojho took a wire of 5 cm of the same material and thickness. Both of them connected the wires as shown in the circuit given in Figure 14.4. The current flowing in both circuits is the same.

(i) Will the heat produced in both cases be equal? Explain

(ii) Will the heat produced be the same if the wires taken by them are of equal lengths but of different thicknesses? Explain.


What are the uses of electromagnets?


What is an electric fuse made up of?


Explain the working of an electric fuse.


Name a few appliances which work on the basis of the heating effect of current.


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


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Which of these four materials would be used for making filament of bulb?


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