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  • 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)

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)

Answers (1)

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(a) False, Negative terminal should be connected to the positive terminal of the other cell

(b) True, the wire of the fuse has a low melting point. So, when the heat due to the current is higher than a certain limit, it melts quickly and breaks the circuit 

(c) False, A magnet always attracts the iron piece.

(d) True, An electric bell works with the help of an electromagnet. It is made up of a coil of wire wound on an iron piece, which acts as an electromagnet

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