EASY
7th CBSE
IMPORTANT
Earn 100

The wire used in an electric fuse should conduct electricity. What other property must it have?

Important Questions on Electric Current and Its Effects

EASY
7th CBSE
IMPORTANT
Living Science 7>Chapter 17 - Electric Current and Its Effects>ORAL QUESTIONS>Q 2
A coil of wire wound around a soft iron bar is called an electromagnet. When does an electromagnet act like a magnet?
EASY
7th CBSE
IMPORTANT
Living Science 7>Chapter 17 - Electric Current and Its Effects>ORAL QUESTIONS>Q 3
A straight wire carrying a current acts like a magnet. Then why is a coil of wire used in an electromagnet instead of just a straight wire?
EASY
7th CBSE
IMPORTANT
Living Science 7>Chapter 17 - Electric Current and Its Effects>EXERCISES>Q A
Which of these is not a circuit element?
EASY
7th CBSE
IMPORTANT
Living Science 7>Chapter 17 - Electric Current and Its Effects>EXERCISES>Q A
The necessary requirement for a fuse wire is 
EASY
7th CBSE
IMPORTANT
Living Science 7>Chapter 17 - Electric Current and Its Effects>EXERCISES>Q A
The strength of a magnetic field due to a solenoid can be increased by
EASY
7th CBSE
IMPORTANT
Living Science 7>Chapter 17 - Electric Current and Its Effects>EXERCISES>Q A
Which of these appliances does not use an electromagnet?
 
EASY
7th CBSE
IMPORTANT
Living Science 7>Chapter 17 - Electric Current and Its Effects>EXERCISES>Q A
Which of these is absolutely necessary in an electric circuit?
MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 17 - Electric Current and Its Effects>EXERCISES>Q A
The same current is passed through the following. Which will show the strongest magnetic strength?