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A bulb is connected first with DC and th...

A bulb is connected first with `DC` and the then `AC` of same voltage then it will shine brightly with

A

AC

B

DC

C

brightness will be in ratio 1/1.4

D

equally with both AC and DC supply

Text Solution

Verified by Experts

The correct Answer is:
D
As power consumption i.e. P=VI
`implies P=(V^(2))/(R)`
So, brightness `prop P_("consumed") prop(1)/(R)` for bulb, `R_(AC)=R_(DC)`.
So, brightness will be equal in both the cases.
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