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How to make the model of an electromagnetic crane?
What is the difference between electric current and electric circuit?
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.
Which is the appropriate term used for a liquid or solution which conducts electricity along with some accompanying chemical changes?
Explain the working of an electric bell.
advantages and disadvantages of heating effect of electric current
What is the full form of MCB ? What is its function ?
Mention any three causes of excessive current in household circuit.
what do you mean by the heating effect of electric current?
what are the advantages of MCB over electric fuse ?
name 2 devices based on magnetic effect of electric current?
When the bulb fuses why does it not glows?
What is meant by an open circuit? Why does electric current not pass in this case?
What is an electric fuse ? How does it work ?
The hair dryer works on which effect of current?
fuse wires or mcb are not used in a circuit containing electric cell.why?
WHY DOES STEEL IS NOT USED AS THE CORE OF ELECTROMAGNET?
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
can you use copper wire to make the filament of an electric bulb ? why?
what is short circuit ?
What are the factors on which amount of heat produced in a circuit depends?
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 is the relationship between potential difference and direction of flow corrent in an electric circuit ?
what are the causes of greenhouse effect ?
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?
batteries used in tractors, trucks, inverters are also made of cells then why it is called a battery ?
what is the name of the chemical present in electric cell?
what is full form of MCB and CFL
what is electric fuse ?
Whether the batteries used in trucks, tractors and invertors are also made from cells. then why it is called a battery?
how to make a electromagnet
explain the working of an electric bell. Very very urgent
What is the difference between amphier and voltage?
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 ?
Wire 'a' has a lower melting point than wire 'b'.Which wire would u choose to make a fuse to a} allow more current to pass through and b} allow less current to pass through? Give reason for your answers.
what is heating effect in electric current ?
Give any 2 advantages of electromagnets over bar magnets.
pls help me to make a physics working model on solar energy
CLASS 7ELECTRIC CURRENT AND ITS EFFECTSanswer me these short questions: -(2/3 marks each)1. What type of magnet is used in an electric bell?2. Enlist the factors affecting heat produced in a current carrying wire?3. What are the characteristics of a fuse wire?4. What were the conclusions of Oersted 's experiment?5. Write two applications of electromagnet?Answer me these long questions:-(5 marks each)explain the working of an electric bell with the help of a diagram?What is an electromagnet? enlist factors affecting its magnetic field.Describe an activity to make an electromagnet.Define the following:-(1/2 mark each)electric circuitresistanceconductorfuseelectromagnetinsulatoroverloadingshort circuitcellcurrent
ELECTRIC CURRENT AND ITS EFFECTS
answer me these short questions: -(2/3 marks each)
1. What type of magnet is used in an electric bell?
2. Enlist the factors affecting heat produced in a current carrying wire?
3. What are the characteristics of a fuse wire?
4. What were the conclusions of Oersted 's experiment?
5. Write two applications of electromagnet?
Answer me these long questions:-(5 marks each)
Define the following:-(1/2 mark each)
how dose a fire alarm work?
define electric current
Fuse is said to blow when the circuit is ---------- ( closed / broken )
why are MCB's most commonly used in place of fuses?
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 ???????????????
WRITE THE ADVANTAGES AND DISADVANTAGES OF HEATING EFFECT OF ELECTRIC CURRENT.
What will happen if a thick copper wire is used as a fuse ?
Is it possible for a wire to melt and break?
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