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An electric iron of resistance 20 Ω takes a current of 5 A. Calculate the heat developed in 30 s.
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- čas přidán 27. 04. 2020
- Q.3 An electric iron of resistance 20 Ω takes a current of 5 A. Calculate the
heat developed in 30 s.
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Electricity class 10th complete video notes (playlist) link:-
• Electricity class 10 f...
Electricity class 10th Intext questions and answer (playlist) link:-
• Electricity class 10th...
Electricity class 10th Ncert exercise solution (playlist) link:-
• Electricity class 10th...
Electricity class 10th topic wise VIDEO link:-
Introduction and types of charges - • Electricity class 10 |...
Define 1 coulomb of charge - • Define 1 coulomb of ch...
No. Of electrons in 1 coulomb - • Calculate the number o...
Conductors and Insulators - • Conductors and Insulat...
Electric potential and potential difference - • Electric potential and...
Define electric current (1 ampere) - • Define electric curren...
Direction of electric current - • Direction of electric ...
Electric circuit - • Electric circuit class...
Symbols of electrical components - • Symbols of electrical ...
Define circuit diagram - • Circuit diagram class ...
Ohm's law and derivation of ohms law - • Define Ohm's law class...
Good conductors, resistors, and Insulators - • Good conductors resist...
Experiment to verify ohm's law - • Experiment to verify o...
Factors on which the resistance of conductor depends - • Factors on which the r...
Resistivity - • Resistivity class 10 i...
Resistivities of some common substances - • Resistivities of Some ...
Combination of resistance - • Combination of resista...
Resistance in series experiment (two resistors) - • Resistor in series exp...
Resistor in series derivation (three resistors) - • Resistors in series de...
Resistance in parallel - • Resistance in parallel...
Resistor in parallel derivation (two resistances) - • Resistors in parallel ...
Resistor in parallel derivation (three resistances) - • Resistors in parallel ...
Domestic electric circuits - • Domestic electric circ...
Disadvantages of series circuit - • Disadvantages of serie...
Advantages of parallel circuits - • Advantages of parallel...
Electric power - • Electric power class 1...
Formula for calculating electric power - • Formula for calculatin...
Some other formulae for calculating electric power - • Some other formulae fo...
Power voltage rating of electrical appliances - • Power voltage rating o...
Heating effect of electric current - • Heating effect of elec...
Electricity class 10th ncert intext questions and answer
Page no.200
Q.1 • What does an electric ...
Q.2 • Define the unit of cur...
Q.3 • Calculate the number o...
Page no.202
Q.1 • Name a device that hel...
Q.2 • What is meant by sayin...
Q.3 • How much energy is giv...
Page no.209
Q.1 • On what factors does t...
Q.2 • Will current flow more...
Q.3 • Let the resistance of ...
Page no.213
Q.1 • Draw a schematic diagr...
Q.2 • Redraw the circuit of ...
Page no.216
Q.1 • Judge the equivalent r...
Q.2 • An electric lamp of 10...
Q.3 • What are the advantage...
Q.4 • How can three resistor...
Q.5 • What is (a) the highes...
Page no.218
Q.1 • Why does the cord of a...
Q.2 • Compute the heat gener...
Q.3 • An electric iron of re...
Page no. 220
Q.2 • An electric motor take...
Electricity class 10th ncert exercise solution
Q.1 • A piece of wire resist...
Q.2 • Which of the following...
Q.3 • An electric bulb is ra...
Q.4 • Two conducting wires o...
Q.6 • A copper wire has diam...
Q.8 • When 12 V battery is c...
Q.9 • A battery of 9 V conne...
Q.10 • How many 176 Ω resisto...
Q.11 • Show how you would con...
Q.12 • Several electric bulbs...
Q.13 • A hot plate of an elec...
Q.14 • Compare the power used...
Q.15 • Two lamps, one rated 1...
Q.16 • Which uses more energy...
Q.17 • An electric heater of ...
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Sir, I have a doubt. Is the electrical resistance of an iron box is low or high? Please give a brief explanation regarding this. Thank you in advance..!
Iron box or iron press?
@@darshanclasses Iron box
@@darshanclasses I'm in a great confusion that why a high resistance nichrome wire used in the iron box?..If a high resistance material is used in an iron box, then how a high current flows through it..?. I thought that the lower resistance material will give the passage for high current and even a high temperature. But, why an iron box uses a high resistance material for heating..?.Please give me a clarification regarding this confusion...
First of all u want to compare two materials for electrical resistivity or resistance so you can easily tell which one is highly resistance....but in this question u have tell only for iron box so plz tell for which perspective I want to tell iron box is higher resistance or not....
For ex- in comparison of copper and iron ....iron is highly resistance than copper
So you have to tell me for which comparision u ask me for iron box resistance..
This is the full chart of most common material resistance
Aluminium2.8 x 10-8
Antimony3.9 x 10-7
Bismuth1.3 x 10-6
Brass~0.6 - 0.9 x 10-7
Cadmium6 x 10-8
Cobalt5.6 x 10-8
Copper1.7 x 10-8
Gold2.4 x 10-8
Carbon (Graphite)1 x 10-5
Germanium4.6 x 10-1
Iron1.0 x 10-7
Lead1.9 x 10-7
Manganin4.2 x 10-7
Nichrome1.1 x 10-6
Nickel7 x 10-8
Palladium1.0 x 10-7
Platinum0.98 x 10-7
Quartz7 x 1017
Silicon6.4 x 102
Silver1.6 x 10-8
Tantalum1.3 x 10-7
Tin1.1 x 10-7
Tungsten4.9 x 10-8
Zinc5.5 x 10-8
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Sir I have a doubt
Kilowatt hour = joules
###Not watt second = joules
Watt come because I^2R and second come for t
Please reply sir
Thanks
15 thousand
Bro 15000 ko 15 thousand bolte hai
Thank you very much 💟 Sir 😊
Sir NCERT ki Jo app ha uSma H=vit lagaya ha
Sir ye qstions apne kahan sy lie hein...ans plz sir...
Ncert
Em from Pakistan...I have subscribed ur channel...sir plz would u help me
These same qstions sir have given us in our test...
Okk I will be help for sure....
@@darshanclasses thanks😊
Bhai 1500 bhi 15000aaega
15 thousand joule likh ke aap usse fifteen hundred joule bol rhe ho, pls thoda sa dhyan rkho
Shi baat hae but samajh aa gya ki is question mae krna kya hae😅
15 thousand