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Five lamps L1, L2, L3, L4 and L5 and th...

Five lamps` L_1, L_2, L_3, L_4 and L_5` and three different types of materials M, M, and M, are used in the circuit shown.

If `L_2, L_3 and L_4` are the only lamps that light up, then which one of the following conclusions can be made?

A

Only `M_2` and `M_3` are insulators of electricity.

B

Only `M_1` and `M_3` are insulators of electricity.

C

Only `M_1` and `M_2` are conductors of electricity

D

Only `M_1` and `M_3` are conductors of electricity.

Text Solution

Verified by Experts

The correct Answer is:
D
Only `M_1` and `M_3` are conductors of electricity.
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