Question

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a) a
9. Mark T if the statement is true and F if it is false:
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)​

Answer 1

Answer:

a) is false

b) is true

c) is false

d) is true

Answer 2

A) The statement is false. A cell has two ends: + (positive) and – (negative). Electric current is pushed in a cell from the positive terminal to the negative one.

B)  The statement is True. The electric fuse WORKS on the principle of heating effect of electric current. The amount of heating caused depends on the amount of current flowing through the wire . Therefore if the electric current exceeds a certain limit, the fuse wire will melt and break.

C) The statement is True. Working of an electromagnet is based on the magnetic effect of electric current. An electromagnet behaves as a magnet when current passes through it. Hence, it will attract a piece of iron

D) The statement is True. An electric bell consists of one or more electromagnets.

Hope it helped :)