Chapter 14


Electric effects and their action

1) Draw the symbols of the following components of an electric circuit with your thumbs. Connectors switch from closed position, bulbs, cells, switches to off position and batteries

Answer: FOR STUDENTS

2) 14.21 To see the picture, read the letter and draw the picture. 



3) See figure 14.22, the four cells are now fitted with eight holes. Arrange the four cell battery and draw a line to show how it should be connected.



4) As shown in figure 14.23, the bulb is not lit. Do you know why? The required annual occurrence of light bulbs. 


5) Name any two functions of electric current. 

Answer:- 1) Magnetic action.

6) When current flows through the coil, the magnetic field near the coil is deflected in a north-south direction. explain 

Answer:- 

7) Refer to figure 14.24 What is the deflection of the magnetic field in the pole of the plate?


8) Fill in the blanks: 

a) The long line of cell symbols indicates the ________ region of the cell. 

b) Additive of two or more cells is called ________. 

c) When current is passed through the coil heater, it is ________. 

d) The protection system based on the action of electric current or heat generation is called ________. 


9) If the following statements are wrong, correct them and if they are correct, recognize them correctly: 

A) It is a battery of two cells and the negative end of the cell should be connected to the negative end of the second cell. (true\false)

Answer: False. 

b) If the current flowing through the fuse is too high, the fuse will blow. (true\false) 

Answer: Pure.

c) Iron pieces are not attracted to electromagnets. (true\false) 

Answer: False.

d) An electric clock has only so many electromagnets. (false\correct)

Answer: Pure. 

10) Do you think it would be effective to use electromagnets to separate the garbage piles of plastic? explain 

Answer: - Don't forget the ladder. Because electromagnets attract magnetic materials. Plastic magnets are not magnetic materials and do not attract electromagnets. 

11) This electrician has done repair work on your house. They are looking for fuses and slabs. Do you agree? Explain the reason for your reaction. 

Answer: Do not agree with the ladder. Because the fuse is made of special metal and if it is electrically operated, it will heat up and burn. 

12) 14.4 Using this cell line chain, this needle and this bulb, Jubedai spelled it out. The bulb lit up in spite of the light behind him. Jubedak helps to determine the possibility of forgetting words. 

13) Refer to Figure 14.25 

a) Which bulb is lit in the off position? 

Ans: In the off position no bulb is lit.

b) If the switch is turned on, will the bulbs A, B and C light up?