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How to make the model of an electromagnetic crane?
How can we make a simple electric bell ?
explain the construction and working of an electric bell.
what do you mean by ISI mark?
WHAT IS KIT KAT FUSE ? PLEASE SHOW DIAGRAM.
Explain the working of an electric bell.
What is the difference between electric current and electric circuit?
batteries used in tractors, trucks, inverters are also made of cells then why it is called a battery ?
advantages and disadvantages of heating effect of electric current
What is the full form of MCB ? What is its function ?
what do you mean by the heating effect of electric current?
what are the advantages of MCB over electric fuse ?
WHY DOES STEEL IS NOT USED AS THE CORE OF ELECTROMAGNET?
name 2 devices based on magnetic effect of electric current?
When the bulb fuses why does it not glows?
What is an electric fuse ? How does it work ?
why does the glow electric bulb become warm?
fuse wires or mcb are not used in a circuit containing electric cell.why?
air is not filled in electric bulbs. why? justify your answer.
What is the difference between magnetic effect of electric current and heating effect of electric current?
how to make a working model on transport and communication
Mention any three causes of excessive current in household circuit.
can you use copper wire to make the filament of an electric bulb ? why?
TICK THE ODD ONE OUT GIVING REASON:-
1) OPEN ELECTRICAL CIRCUIT,CIRCUIT DIAGRAM,BATTERY,CLOSED ELECTRIC CIRCUIT,SWITCH.
what is the name of the chemical present in electric cell?
what is short circuit ?
what do you mean by earthing??
what are the advantages of electromagnets over permanent magnets?give 3 points
please answer fast its very urgent.
what are the causes of greenhouse effect ?
what will happen if we use a thick tungsten wire in a electric bulb?
define potential difference
a coil with no current passing through it is suspended freely.it points in the east-west direction.explain what will happen if a current is passed through a coil
3 DIFFERENCES BETWEEN NICHROME AND TUNGSTEN?
What is meant by an open circuit? Why does electric current not pass in this case?
what is full form of MCB and CFL
what is electric fuse ?
what is the difference between periodic and repetitive motion?
Whether the batteries used in trucks, tractors and invertors are also made from cells. then why it is called a battery?
1)the necessary requirement for a fuse wire is conductor with low melting point.why?
2)three 100W light bulbs are connected in series to a 220 V power source. If two of the light bulbs are replaced by 60 W bulbs the brightness of the remaining 100 W bulb is dimmer than it was before.please explain.
how to make a electromagnet
explain the working of an electric bell. Very very urgent
Is it possible for a wire to melt and break?
Following questions are from our school SCIENCE book's CHAPTER 11(ELECTRIC CHARGES AT REST) OF DAV CMC, PROVIDED BY OUR SCHOOL. THIS CHAPTER IS NOT AVAILABLE AT OUR MERITNATION SCHOOL.
SO YOU ARE REQUESTED TO KINDLY PROVIDE ME THE ANSWER OF THE QUESTIONS AS MENTIONED BELOW:-
Q1. A glass rod is rubbed against a silk cloth and an ebonite rod is rubbed against a piece of flannel. List the pairs which have (a) similar (b) dissimilar charges on them.
Q2. A chrged drinkinG plastic straw is brought near another similar suspended straw that is (a) also similarly charged (b) uncharged. Explain what we would observe in each case and why.
Q3. Describe a simple experiment to show that the total charge on a pair of objects rubbed together is zero.
Q4. Why do we say that ' charges are always produced in pairs'?
Q5. State advanteages of lightninig.
Q6. Is it important to have a very good contact between the lower end of a lightning conductor and the earth? if so, why?
Q7. A charged object is found to lose its charge when touched. Explain, why?
Q8. What can we say about the sign of the charge acquired by an object when it is charged by a positively charged rod through (i) conduction (ii) induction?
Q9. Can we say that a charged object attracts an uncharged object by first charging it by induction ? Explain your answer.
What is the difference between hard iron and soft iron ?
what is heating effect in electric current ?
FILL IN THE BLANK- THE WIRE GETS ________WHEN AN ELECTRIC CURRENT PASSES THROUGH IT.
Give any 2 advantages of electromagnets over bar magnets.
pls help me to make a physics working model on solar energy
how dose a fire alarm work?
Which is the appropriate term used for a liquid or solution which conducts electricity along with some accompanying chemical changes?
why are MCB's most commonly used in place of fuses?
what might happen if you put a 15A fuse in a plug for a tv and the tv was faulty?
what is the relationship between potential difference and direction of flow corrent in an electric circuit ?
Paheli and Boojho saw a magic trick sometime back. The magician placedan iron box on a stand. He then called Boojho and asked him to lift thebox. Boojho could easily lift the box. Now the magician made a show ofmoving his stick around the box while muttering some thing. He againasked Boojho to lift the box. This time Boojho could not even move it. Themagician again muttered some thing and now Boojho could lift the box.The audience, including Paheli and Boojho, were very impressed withthe show and felt that the magician had some supernatural powers.However, after reading this chapter Paheli is wondering if the trick wasindeed some magic or some science was involved? Can you guess whatscience might be involved?Paheli and Boojho saw a magic trick sometime back. The magician placedan iron box on a stand. He then called Boojho and asked him to lift thebox. Boojho could easily lift the box. Now the magician made a show ofmoving his stick around the box while muttering some thing. He againasked Boojho to lift the box. This time Boojho could not even move it. Themagician again muttered some thing and now Boojho could lift the box.The audience, including Paheli and Boojho, were very impressed withthe show and felt that the magician had some supernatural powers.However, after reading this chapter Paheli is wondering if the trick wasindeed some magic or some science was involved? Can you guess whatscience might be involved?
Explain the working of an electric bell??????? if u guys tell me tjhe right ans then thumbss up.plz do write in detail...........
what is fuse how does it work ???????????????
WHy CFL are now a day's being used instead of electric bulbs?
define electric current
WRITE THE ADVANTAGES AND DISADVANTAGES OF HEATING EFFECT OF ELECTRIC CURRENT.
why in jungle magnetic compass is not working?
What will happen if a thick copper wire is used as a fuse ?
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