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Subject :NSO    Class : Class 7

Identify the symbols of given electric components

A (i)-bulb, (ii)-open switch, (iii)-wire
B (i)-bulb, (ii)-closed switch, (iii)-resistance
C (i)-closed switch, (ii)-wire, (iii)-bulb
D (i)-resistance, (ii)-bulb, (iii)-wire

Figure no. 2 is the symbol for an open plug key not an open switch

Ans 1:

Class : Class 9
Plug key is also a type of switch.

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