MEDIUM
7th Tamil Nadu Board
IMPORTANT
Earn 100

What is the S.I unit of electrical conductivity?

Important Questions on Electricity

EASY
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 2>Chapter 2 - Electricity>Evaluation>Q VII
Define fuse.
EASY
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 2>Chapter 2 - Electricity>Evaluation>Q VII
Name some devices that run using heat effect of electric current.
EASY
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 2>Chapter 2 - Electricity>Evaluation>Q VII
Name few insulators.
MEDIUM
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 2>Chapter 2 - Electricity>Evaluation>Q VII
What is a battery?
MEDIUM
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 2>Chapter 2 - Electricity>Evaluation>Q VIII
Define an electric current.
HARD
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 2>Chapter 2 - Electricity>Evaluation>Q IX
Explain the heating effect of electric current.
HARD
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 2>Chapter 2 - Electricity>Evaluation>Q IX
Explain the construction and working of a dry cell.
HARD
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 2>Chapter 2 - Electricity>Evaluation>Q X
A student made a circuit by using an electric cell, a switch, a torch bulb (fitted in the bulb holder) and copper connecting wires. When he turned on the switch, the torch bulb did not glow at all. The student checked the circuit and found that all the wire connections were tight. What could be the possible reason for the torch bulb not glowing even when the circuit appears to be complete?