Question

6.
Consider the circuit below:
[INJSO STAGE-2 2009-10)
(A) If the bulb A burns out, then bulb C stays lighted, bulb B burns brightly
(B) If the bulb B burns out, then bulb C goes off and D stays lighted
(C) If the bulb C burns out, bulb A and B go off
(D) If the bulb D burns out, the event is unnoticeable, and bulbs A, B, C stays lighted.​

Answer 1

Answer:

D opt. is correct, A,b and c form a closed circuit within themselves already

Explanation:

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