Fig. 14.24
8. Fill in the blanks:
(a) Longer line in the symbol for a 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) The safety device based on the heating effect of electric current is
called a
9. Mark T if the statement is true and F if it is false:
(a) To make a battery of two cells, the negative terminal of one cell is
connected to the negative terminal of the other cell. (T/F)
(b) When the electric current through the fuse exceeds a certain limit,
the fuse wire melts and breaks. (T/F)
(c) An electromagnet does not attract a piece of iron. (T/F)
(d) An electric bell has an electromagnet. (T/F)
10. Do you think an electromagnet can be used for separating plastic bags
from a parhage hean? Explain.
Answers
GIVE AWAY
BIGGEST GIVE AWAY
OF FREE POINTS, AT
3:00 PM TODAY SO WHO WILL ANSWERS FIRST WILL BE MARKED BRAINLIAST ,SO BE READY AND FOLLOW MY PROFILE AND YOU HAVE TO TELL YOUR SCHOOL/COLLEGE, CLASS AND ALSO SHARE YOUR PICTURE TO WIN YOU HAVE TO ANSWER, BEST ,SUTAIBLE ANSWER FOR THE QUESTION AT 3:00 PM ,TODAY
please mark as BRAINLIAST
Answer:
Question 8. Fill in the blanks
(a) Longer line in the symbol for a cell represents its ----------------- terminal.
(b) The combination of two or more cells is called a--------------.
(c) When a current is switched ON in a room heater, it ----------.
(d) The safety device based on the heating effect of electric current is called a -----------.
Answer: Fill in the blanks
(a) Longer line in the symbol for a cell represents its positive terminal.
(b) The combination of two or more cells is called a battery.
(c) When a current is switched ON in a room heater, it produces heat.
(d) The safety device based on the heating effect of electric current is called a fuse.
Question 9. Mark ‘T” if the statement is true and ‘F’ if it is false:
(a) To make a battery of two cells, the negative terminal of one cell is connected to the negative terminal of other cell. (T/F)
(b) When the current through the fuse exceeds a certain limit, the fuse wire melts and breaks. (T/F)
(c) An electromagnet does not attract a piece of iron. (T/F)
(d) An electric bell has an electromagnet. (T/F)
Answer: (a) F (b) T (c) F (d) T
Question 10. Do you think an electromagnet can be used for separating plastic bags from a garbage heap? Explain.
Answer: No, electromagnets attract only the magnetic material like iron. So, it
cannot be used for separating plastic from garbage.