In the following arrangement shown in the figure, the bulb will not glow if the ends A and B are connected with (a) A steel spoon (b) A metal clip (c) A plastic clip (d) A copper wire

NCERT Exemplar Solutions for Class 6 Science Chapter 12- image 2

Steel spoon, metal clip, and copper wire all or made of metal while the plastic clip is a non-metal thing. And we know that only metals conduct electricity that’s why they are conductors and non-metals do not conduct electricity that is why they are insulators. Hence, conductors allow the current to flow that is why option (a),(b) and (d) are not right option and only (c) is the correct option which does not allow current to flow and will not let the bulb glow.

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