NCERT Solutions
Board Paper Solutions
Ask & Answer
School Talk
Login
GET APP
Login
Create Account
Popular
Latest
Expert Answers
ALL
Aniruddh
Subject: Science
, asked on 24/1/18
Use the following information to answer the next question.
Consider the following statements about an electric bell:
I. An electric bell works on the principle of magnetic effect of current
II. An electric bell consists of an electromagnet
Ill. An electric bell produces sound continuously
Among the given statements,
(A) only I is correct (B) only III is correct
(C) both I and II are correct (D) both II and III are correct
Answer
2
Aniruddh
Subject: Science
, asked on 24/1/18
Which of the following characteristics is associated with an ideal fuse element?
(A) It should be cheap
(B) It should have very low resistance
(C) It should have a low melting point
(D) It should show the magnetic effect of current
Answer
4
Krisha Hemant Surve
Subject: Science
, asked on 22/1/18
An electrician is carrying out some repairs in your house. He wants to replace a fuse by a piece of wire. Would you agree? Give reason for your response.
Answer
3
Ajay P. T
Subject: Science
, asked on 19/1/18
A circuit having an LED must have a resistor connected to it . True or false
Answer
1
Sarbajeet Sana
Subject: Science
, asked on 16/1/18
What precautions will you observe at the time of operating electrical machines?
Answer
1
Sarbajeet Sana
Subject: Science
, asked on 16/1/18
What precautions will you observe at the time of using fire extinguisher ?
Answer
2
Sarbajeet Sana
Subject: Science
, asked on 16/1/18
What precautions will you observe before switching 'ON' a current to any portable electrical equipment.
Answer
4
Anannya N.
Subject: Science
, asked on 16/1/18
What are the advantages of heating effect of current??
Answer
3
Scientist 😍😍
Subject: Science
, asked on 14/1/18
Describe a simple experiment to show that the total charge on a pair of objects that have been rubbed together, zero
Answer
1
Scientist 😍😍
Subject: Science
, asked on 14/1/18
List down two precautions that a person can take if he is caught outside in the open during a lightning strike.
Answer
1
Gaurang Dhall
Subject: Science
, asked on 13/1/18
Differentiate between bar magnet and electromagnet
Answer
1
Santanu Sahoo
Subject: Science
, asked on 13/1/18
Explain the reason for the following in detail:
Drivers and passengers are warned to stay inside the car if it runs into a downed power line.
Answer
1
Santanu Sahoo
Subject: Science
, asked on 13/1/18
Give detailed reason for the following:
A squirrel can run across an electrical power line, but sadly die when its foot makes contact with the grounded pole at wire's end.
Answer
1
Kashish Aggarwal
Subject: Science
, asked on 4/1/18
why copper wires are not used in making filament of an electric bulb
Answer
3
Khuushi Agarwal
Subject: Science
, asked on 2/1/18
draw and describe an electric circuit consisting of a battery with 4 cells,switch,conducting wires and a bulb
Answer
2
Prev
1
2
3
4
5
Next
What are you looking for?
Consider the following statements about an electric bell:
I. An electric bell works on the principle of magnetic effect of current
II. An electric bell consists of an electromagnet
Ill. An electric bell produces sound continuously
Among the given statements,
(A) only I is correct (B) only III is correct
(C) both I and II are correct (D) both II and III are correct
(A) It should be cheap
(B) It should have very low resistance
(C) It should have a low melting point
(D) It should show the magnetic effect of current