MEDIUM
7th CBSE
IMPORTANT
Earn 100

We should never touch electrical appliances with wet hands.

88.89% studentsanswered this correctly

Important Questions on Electric Current and Its Effects

MEDIUM
7th CBSE
IMPORTANT

Match the following:

Column A Column B
1. Thick small line in the circuit diagram a. Alloy of nickel and chromium
2. Fuse     b. Magnetic effect of electric current
3. Electric bell   c. Cranes
4. Electromagnet     d. Negative terminal of a cell
5. Nichrome   e. Heating effect of electric current
MEDIUM
7th CBSE
IMPORTANT
Write the symbols used for switch on and off position.
EASY
7th CBSE
IMPORTANT
Collection of cells connected together is called this name.
MEDIUM
7th CBSE
IMPORTANT
Name a device that works on the principle of magnetic effect of current.
HARD
7th CBSE
IMPORTANT
What is a fuse? What is its advantage?
MEDIUM
7th CBSE
IMPORTANT
What are CFLs? Write their advantages.