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In a series L.C.R. circuit, the potentia...

In a series L.C.R. circuit, the potential drop across `L`, `C` and `R` respectively are `40V`, `120V` and `60V` . Them the source voltage is

A

`220V`

B

`160V`

C

`180V`

D

`100V`

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The correct Answer is:
D
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