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How to make the model of an electromagnetic crane?
what do you mean by earthing??
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.
When the bulb fuses why does it not glows?
Explain the working of an electric bell.
why does the glow electric bulb become warm?
advantages and disadvantages of heating effect of electric current
What is the full form of MCB ? What is its function ?
what are the advantages of MCB over electric fuse ?
what do you mean by the heating effect of electric current?
name 2 devices based on magnetic effect of electric current?
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 an electric fuse ? How does it work ?
Do not touch a lighted electric bulb connected to the mains.. give reason
fuse wires or mcb are not used in a circuit containing electric cell.why?
which among the following is the best insulator of electricity
c. dry air
air is not filled in electric bulbs. why? justify your answer.
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
What is the difference between magnetic effect of electric current and heating effect of electric current?
What is the difference between electric current and electric circuit?
how to make a working model on transport and communication
an electrician carrying out some repairs in your house. He wants to replace a fuse by a piece of wire. Would you agree? Give reasons for your response.
can you use copper wire to make the filament of an electric bulb ? why?
what is short circuit ?
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 ?
define potential difference
TICK THE ODD ONE OUT GIVING REASON:-
1) OPEN ELECTRICAL CIRCUIT,CIRCUIT DIAGRAM,BATTERY,CLOSED ELECTRIC CIRCUIT,SWITCH.
3 DIFFERENCES BETWEEN NICHROME AND TUNGSTEN?
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?
suggest an experimental set up illustrate the funtion of an electric fuse plz ans fast
how to make a electromagnet
explain the working of an electric bell. Very very urgent
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 ?
Give any 2 advantages of electromagnets over bar magnets.
Fill in the blanks:
(a) Longer line in the symbol for cell representsits_________terminal.
(b) The combination of two or more cells is calleda _________.
(c) Whencurrent is switched ‘on’ in a room heater, it __________.
(d) The safety device based on the heating effectof electric current is called a _________.
pls help me to make a physics working model on solar energy
WHY DOES STEEL IS NOT USED AS THE CORE OF ELECTROMAGNET?
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 is the relationship between potential difference and direction of flow corrent in an electric circuit ?
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.
define electric current
What will happen if a thick copper wire is used as a fuse ?
Why does an electric bulb get hot if its kept 'ON' for a little while?
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