EASY
7th CBSE
IMPORTANT
Earn 100

Differentiate between the following: A cell and a battery

Important Questions on Electric Current and Its Uses

MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 13 - Electric Current and Its Uses>EXERCISES>Q VI
Differentiate between the following: An incandescent lamp and a fluorescent tube.
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 13 - Electric Current and Its Uses>EXERCISES>Q VII
Which metal filament is used in electric bulbs for lighting purposes and why?
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 13 - Electric Current and Its Uses>EXERCISES>Q VII

Why coils made from Nichrome are used as heating coils? 

MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 13 - Electric Current and Its Uses>EXERCISES>Q VII

Why do we not make use of copper or silver as heating coils? 

MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 13 - Electric Current and Its Uses>EXERCISES>Q VII

Why fluorescent tube gives more light with less consumption of energy in comparison to incandescent lamp. 

EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 13 - Electric Current and Its Uses>EXERCISES>Q VII

List magnetic uses of electricity. 

MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 13 - Electric Current and Its Uses>EXERCISES>Q VII

List the factors on which the strength of an electromagnet depends. 

MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 13 - Electric Current and Its Uses>EXERCISES>Q VII

Why do we make use of a 'fuse' on line?