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When capacitors are connected in paralle...

When capacitors are connected in parallel, the total capacitance is always __________ the individual capacitance values.
a) Greater than
b) Less than
c) Equal to
d) Cannot be determined

Text Solution

Verified by Experts

The correct Answer is:
B
Given velocity of sound = v
velocity of air = u
velocity of sound be in direction AVC,
so that it can reach B with resultant velocity,
Angle between v and u is `theta gtpi/2`
ltbr Resultant `vec(AD) = sqrt(v^2-u^2)`
Here time taken by lilght to reach B is neglected:
`:.` Time lag betwen seeing and hearing
= time to here the drum sound
`t= Displancement /velocity `
`= x^2/(sqrt(v^2-u^2))`
`= x/(sqrt((v+u)(v-u))`
`=x/(sqrt(x/t_1)(x/t_2))`
from question 49
`=sqrt(t_1 t_2)`.
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