MEDIUM
7th CBSE
IMPORTANT
Earn 100

What is an electric fuse? What are the characteristics of electric fuse?

Important Questions on Electric Current and Its Effects

EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 14 - Electric Current and Its Effects>Exercise 14.2>Q III
Can we use the same fuse in a geyser and a TV set. Explain.
EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 14 - Electric Current and Its Effects>Exercise 14.2>Q III
Why do we cover plug pinholes which are within the reach of children with cello tape or a plastic cover when not in use?
MEDIUM
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 14 - Electric Current and Its Effects>Exercise 14.2>Q III

Why does the bulb in the circuit given below in figure does not glow? Draw the circuit with required change.
Question Image

MEDIUM
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 14 - Electric Current and Its Effects>Exercise 14.2>Q IV
What is a solenoid? Draw a diagram with a solenoid connected in a circuit. How can you increase the strength of a solenoid?
MEDIUM
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 14 - Electric Current and Its Effects>Exercise 14.2>Q IV
What is an electromagnet? Give four uses of an electromagnet.
HARD
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 14 - Electric Current and Its Effects>Exercise 14.2>Q IV
Draw a well labelled diagram of an electric bell and explain its working.
HARD
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 14 - Electric Current and Its Effects>Exercise 14.2>Q IV
With the help of an activity, show the magnetic effect of current.
MEDIUM
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 14 - Electric Current and Its Effects>Exercise 14.2>Q IV

Paheli took a wire of length 10 cm. Boojho took a wire of 5 cm of the same material and thickness. Both of them connected the wires as shown in the circuit given in figure. The current flowing in both the circuits is the same. Will the heat produced in both the cases be equal? Explain.

Question Image