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What is the heating effect of electric current? - Science and Technology 1

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प्रश्न

What is the heating effect of electric current?

एक पंक्ति में उत्तर
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उत्तर

When a resistor is connected in an electrical circuit, heat is produced in it due to the current. This is known as the heating effect of current.

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अध्याय 4: Effects of electric current - Answer in one sentence.

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एससीईआरटी महाराष्ट्र Science and Technology 1 [English] 10 Standard SSC
अध्याय 4 Effects of electric current
Answer in one sentence. | Q 1

संबंधित प्रश्न

Compute the heat generated while transferring 96000 coulomb of charge in one hour through a potential difference of 50 V.


The safety device based on the heating effect of electric current is called a ______.


Write Joule's law of heating.


An electric heater is connected to the 230 V mains supply. A current of 8 A flows through the heater. 

(b) How much energy is transferred to the heater each second?


How does the resistance of a wire vary with its: 

 diameter? 

 


An electric kettle rated at 220 V, 2.2 kW, works for 3 hours. Find the energy consumed and the current drawn.


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


What is meant by the heating effect of current? Give two applications of the heating effect of current. 


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


The elements of electrical heating devices are usually made of:

(a) tungsten
(b) bronze
(c) nichrome
(d) argon


The heat produced in a wire of resistance 'x' when a current 'y' flows through it in time 'z' is given by:

(a) x2 × y × z
(bx × z × y2
(cy × z2 × x
(dy × z × 


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


Answer the following question:
what is the heating effect of the electric current? state any four applications of it?


Find the odd one out and give its explanation.


What is a short circuit?


What is overloading?


Explain the importance/uses of fuse wire.


True or False – If False give the correct answer

The fuse wire does not melts whenever there is overload in the wiring.


Name some devices that run using heat effect of electric current


Assertion: Bending of wire decreases the resistance of the electric wire.

Reason: The resistance of a conductor depends on length, thickness, nature of material and temperature of the conductor.


Why is parallel arrangement used in domestic wiring?


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


Unscramble the following words:

SFEU


Your teacher has shown you the following activity.


Activity: Teacher has wound a long insulated piece of wire around an iron nail in the form of a coil. Free ends of the wire are connected to a cell through a switch as shown in the following figure. The current is switched on and some pins are placed near the ends of the nail.

Write down any three questions that come to your mind about this activity.


An MCB can be used instead of a fuse in an electrical circuit.


What are the uses of electromagnets?


______ wire is used in the filament of the bulbs.


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


An electric fuse is a wire made up of a material having ______ melting point.


A fuse is used in an electric circuit to stop high currents flowing through the circuit.


The electric fuse works on the Joule heating principle.


Explain why fuse wire is always connected in a series arrangement.


Find the odd one out.


An electric kettle consumes 1 kW of electric power when operated at 220 V. A fuse wire of what rating must be used for it?


What is the heating effect of electric current?


The graph of voltage vs current for four different materials is shown below.

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


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