Electricity Circuits and Their Components Class 7 Fill in the Blanks
hardElectricity Circuits and Their Components Class 7 Fill in the Blanks
Electricity Circuits and Their Components Class 7 Fill in the Blanks
Question 1.
An electric cell is a portable source of............ energy.
Answer:
electrical
Question 2.
An electric cell has two terminals: one is positive and the other is .............
Answer:
negative
Question 3.
The thin wire inside an incandescent lamp that glows is called the .............
Answer:
filament
Question 4.
The longer wire of an LED is connected to the ............ terminal.
Answer:
positive
Question 5.
Electric current can pass through an LED in ............direction only.
Answer:
one
Electricity Circuits and Their Components Class 7 True or False
Question 1.
An electric cell has three terminals.
Answer:
False
Question 2.
The filament in a bulb glows because it gets cold.
Answer:
False
Question 3.
An LED will glow only when connected in the correct direction.
Answer:
True
Question 4.
A switch helps to complete or break a circuit.
Answer:
True
Question 5.
Electric current flows from the negative to the positive terminal of a cell.
Answer:
False
Electricity Circuits and Their Components Class 7 Match the Following
Question 1.
| Column A | Column B |
| (a) Electric circuit | (i) Allows current to flow |
| (b) Switch | (ii) Stops current flow |
| (c) Incandescent lamp | (iii) Provides light |
| (d) Insulator | (iv) Breaks the circuit |
| (e) Electric cell | (v) Source of electrical energy |
Answer:
| Column A | Column B |
| (a) Electric circuit | (i) Allows current to flow |
| (b) Switch | (iv) Breaks the circuit |
| (c) Incandescent lamp | (iii) Provides light |
| (d) Insulator | (ii) Stops current flow |
| (e) Electric cell | (v) Source of electrical energy |
Question 2.
| Column A | Column B |
| (a) Electric circuit | (i) A device that allows current to flow |
| (b) Switch | (ii) A complete path for electric current |
| (c) Incandescent lamp | (iii) A device that can break or complete a circuit |
| (d) Filament | (iv) Component that glows when current passes through it |
Answer:
| Column A | Column B |
| (a) Electric circuit | (ii) A complete path for electric current |
| (b) Switch | (iii) A device that can break or complete a circuit |
| (c) Incandescent lamp | (iv) Component that glows when current passes through it |
| (d) Filament | (i) A device that allows current to flow |
Question 3.
Answer:
(a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)