Mark âTâ if the statement is true and âFâ 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. $(T/F)$

$(a)$. To make a battery of two cells, the negative terminal of one cell is connected to the negative terminal of the other cell.    (False)

Explanation

In order to make a battery of two cells, the negative terminal of one cell is connected to the positive terminal of the other cell.

$(b)$. When the electric current through the fuse exceeds a certain limit, the fuse wire melts and breaks.   (True)

Explanation

A fuse wire is a short-length wire of a low melting point. So if a large current exceeds a safe value (due to short-circuiting or overloading) it heats the fuse wire too much and the wire melts and breaks the circuit.

$(c)$. An electromagnet does not attract a piece of iron.      (False)

Explanation

An electromagnet is a temporary magnet that works when the current is passed through it. Therefore, it can attract a piece of iron.

$(d)$. An electric bell has an electromagnet.     (True)

Explanation

An electric bell works on the principle of electromagnetism. In an electric bell, a coil of an insulated wire is wrapped around a piece of iron, and when the current passes through the coil it behaves as an electromagnet.

Updated on: 10-Oct-2022

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