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A resistor 'R' and 2(mu)F capacitor in s...

A resistor 'R' and `2(mu)F` capacitor in series is connected through a switch to 200 V direct supply. A cross the capacitor is a neon bulb that lights up at 120 V. Calculate the value of R to make the bulb light up 5 s after the switch has been closed. (`log_(10) 2.5 = 0.4`)

A

`1.7xx 10 ^(5) Omega`

B

` 2.7 xx 10 ^(6) Omega `

C

` 3.3xx 10 ^(7) Omega`

D

` 1.3 xx 10 ^(4) Omega`

Text Solution

Verified by Experts

The correct Answer is:
B
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