Question 8

(i) Our body is a ___ of electricity.
(ii) An electric cell produces electricity from the ___ in it.
(iii) In an electric circuit a fuse is a ___, ___ to prevent possible fire.
(iv) A combination of two more cells is called a ___.

Q. Write True (T) or False (F) against the following statements in the given brackets:
1. Electricity in motion is called current electricity. ( )
2. Rubber is a good example of electric insulator. ( )
3. The base of an electric cell is its negative terminal. ( )
4. The supporting wire breaks in a fused bulb. ( )
5. Electric current can flow through metals. ( )
6. An electric cell two terminals. ( )
7. An electric bulb has a filament that is connected to its terminals. ( )
8. Instead of metal wires, a jute string can be used to make a circuit. ( )

Q.

Fill in the blanks:

(a) A device that is used to break an electric circuit is called a ______ __.

(b) An electric cell has ______ __ terminals.

Q. Fill in the blanks
(a) Longer line in the symbols of an electric cell represents its _______terminal
(b) The combination of two or more cells is called a _____
(c) When current is switched 'ON' in a room heater, it ________
(d) ________ is a safety device based on the heating effect of electric current.

Q. Fill in the blanks:
1. An electric circuit is a closed path in which ............................. flows.
2. A solenoid carrying current behaves like a ............................. .
3. The space around a magnet where its influence can be experienced is called the ............................. .
4. The combination of two or more cells is called a ............................. .
5. When current is switched 'on' in a room heater, it gets ............................. .
6. The safely device based on the heating effect of electric current is called a ............................. .

Q. Statement 1: When the two terminals of an electric cell are joined directly, the chemicals in the electric cell get used up very slowly.
Statement 2: To form an electric circuit one terminal of an electric cell is connected to two terminals of a bulb.