MEDIUM
10th Kerala Board
IMPORTANT
Earn 100

Which are the circumstances that cause high electric current, leading to the melting of fuse wire?

Important Questions on Effects of Electric Current

MEDIUM
10th Kerala Board
IMPORTANT
Physics Standard X Part 1>Chapter 1 - Effects of Electric Current>Exercise 4>Q ii
How is the fuse wire connected to a circuit? In series/ parallel?
MEDIUM
10th Kerala Board
IMPORTANT
Physics Standard X Part 1>Chapter 1 - Effects of Electric Current>Exercise 4>Q iii
You know that according to Joule's Law, more heat will be produced when electric current is increased. What happens to the fuse wire due to this?
MEDIUM
10th Kerala Board
IMPORTANT
Physics Standard X Part 1>Chapter 1 - Effects of Electric Current>Exercise 4>Q iv
When heat is generated, why does the fuse wire melt?
MEDIUM
10th Kerala Board
IMPORTANT
Physics Standard X Part 1>Chapter 1 - Effects of Electric Current>Exercise 4>Q v
When the fuse wire melts, the circuit is broken, what happens to the current in the circuit?
MEDIUM
10th Kerala Board
IMPORTANT
Physics Standard X Part 1>Chapter 1 - Effects of Electric Current>Exercise 4>Q vi
Why is the fuse used in a circuit called safety fuse? Explain.
EASY
10th Kerala Board
IMPORTANT
Physics Standard X Part 1>Chapter 1 - Effects of Electric Current>Exercise 5>Q i
What is the unit of electric power?
MEDIUM
10th Kerala Board
IMPORTANT
Physics Standard X Part 1>Chapter 1 - Effects of Electric Current>Exercise 6>Q i
A current of 0.4 A flows through an electric bulb working at 230 V. What is the power of the bulb in W?
MEDIUM
10th Kerala Board
IMPORTANT
Physics Standard X Part 1>Chapter 1 - Effects of Electric Current>Exercise 7>Q i
Nichrome is not used as filament in incandescent lamps. Why?