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Subject :NSO    Class : Class 7

Which of the following statements is/are correct?
(i) Longer line in the symbol for a cell represents its negative terminal.
(ii) The combination of two or more batteries is called a cell.
(iii) Fuse wire is made up of alloys which has high melting point.
(iv) Electromagnet loses its magnetism when the current flowing through it is switched off.

A(iv) only
B(ii) and (iii) only
C(i), (ii) and (iv) only
D(i), (ii), (iii) and (iv)

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