Electricity Book Back Questions 6th Science Lesson 9
6th Science Lesson 9
9] Electricity
Book Back Questions with Answer and Do You Know Box Content
Do You Know?
Warning: All experiments with electricity should only be performed with batteries used in a torch or radio. Do not, under any circumstance, make the mistake of performing these experiments with the electricity supply in your home, farm or school. Playing with the household electric supply will be extremely dangerous.
Electric Eel is a kind of fish which is able to produce electric current. This fish can produce an electric shock to safeguard itself from enemies and also to catch its food.
Ammeter is an instrument used in electric circuits to find the quantity of current flowing through the circuit. This is to be connected in series.
Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor. He invented more than 1000 useful inventions and most of them are electrical appliances used in homes. He is remembered for the invention of electric bulb.
Choose the best answers:
1. The device which converts chemical energy into electrical energy is
(a) Fan
(b) Solar cell
(c) Cell
(d) Television
2. Electricity is produced in
(a) Transformer
(b) Power station
(c) Electric wire
(d) Television
3. Choose the symbol for battery
4. In which among the following circuits does the bulb glow?
5. _____________ is a good conductor.
(a) Silver
(b) Wood
(c) Rubber
(d) Plastic
Fill in the blanks:
1. _______________ are the materials which allow electric current to pass through them.
2. Flow of electricity through a closed circuit is _____________
3. _________________ is the device used to close or open an electric circuit.
4. The long perpendicular line in the electrical symbol represents its _______________ terminal.
5. The combination of two or more cells is called a _________________
State true or false. If false, correct the statement:
1. In a parallel circuit, the electricity has more than one path.
2. To make a battery of two cells the negative terminal of one cell is connected to the negative terminal of the other cell.
3. The switch is used to close or open an electric circuit.
4. Pure water is a good conductor of electricity.
5. Secondary cell can be used only once.
Match the following:
Arrange in sequence:
A cell, a device, electrical energy, is called, into, chemical energy, that converts.
Consider the statements given below and choose the correct option:
1. Assertion (A) : It is very easy for our body to receive electric shock.
Reason (R) : Human body is a good conductor of electricity.
(a) Both A and R is correct and R is the correct explanation for A
(b) A is correct, but R us not the correct explanation for A
(c) A is wrong but R is correct
(d) Both A and R is correct and R is not the correct explanation for A.
Answers:
Choose the best answers:
1. Cell 2. Power station 3. 
4. 
5. Silver
Fill in the blanks:
1. Conductors 2. Current 3. Switch 4. Positive 5. Battery
Say True or False:
1. True
2. False
Correct Statement: To make a battery of two cells the negative terminal of one cell is connected to the positive terminal of the other cell.
3. True
4. False
Correct Statement: Pure water is a bad conductor of electricity.
5. False
Correct Statement: Secondary cells can be recharged and used again and again.
Match the following:
1. Cell 2. Bulb does not glow 3. Open key 4. Bulb glows 5. Battery
Arrange in sequence:
A device that converts chemical energy into electrical energy is called a Cell.
Consider the statements given below and choose the correct option:
1. Both A and R is correct and R is the correct explanation for A