If there are ‘M’ switches in series numbered from 1, 2, …, M. F – McqOptions

MCQOPTIONS

1.	If there are ‘M’ switches in series numbered from 1, 2, …, M. For circuit to be complete and bulb to glow which of the following is necessary?
A.	1∧ 2∧ 3 ∧ … ∧M should be on
B.	1∧ 2∧ 3 ∧ … ∧M should be off
C.	1 v 2 v 3 v … v M should be on
D.	None of the mentioned
Answer» B. 1∧ 2∧ 3 ∧ … ∧M should be off

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