Question
Three capacitors whose capacitances are 2,4 and $\chi_\mu F$ respectively. They are combine first in series and then in parallel. In both the cases the ratio of their equivalents will be :

Answer

(b)4:49

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

At constant potential difference, the resistance of any electric circuit is halved, the value of heat produced will be :
A rod of a certain metal is $1.0 m$ long and $0.6 \ cm$ in diameter. Its resistance is $3.0 \times 10^{-3}$ ohm. Another disc made of the same metal is $2.0 \ cm$ in diameter and $1.0 \ mm$ thick. What is the resistance between the round faces of the disc
Formula for dispersive power is $($where symbols have their usual meanings$)$
The diagram given show the variation of voltage and current in an AC circuit. The circuit contains.
Image
Photons of energies $1eV$ and $2eV$ are successively incident on a metallic surface of work function $0.5eV.$ The ratio of kinetic energy of most energetic photoelectrons in the two cases will be:
A point charge $q$ is placed at a distance $a/2$ directly above the centre of a square of side $a$. The electric flux through the square is
A particle which has zero rest mass and non-zero energy and momentum must travel with a speed(a) Equal to c, the speed of light in vacuum(b) Greater than c(c) Less than c(d) Tending to infinity
   
   
In the figure shown, the total resistance between $A$ and $B$ is
Three capacitors of 2.0, 3.0  and  6.0 μF are connected in series to a  10 V  source. The charge on the 3.0 μF  capacitor is(a) 5 μC(b) 10 μC(c) 12 μC(d) 15 μC
       
A thermocouple of resistance 1.6Ω is connected in series with a galvanometer of 8Ω resistance. The thermocouple develops and e.m.f. of 10 μV per degree temperature difference between two junctions. When one junction is kept at 0℃  and the other in a molten metal, the galvanometer reads 8 millivolt. The temperature of molten metal, when e.m.f. varies linearly with temperature difference, will be(a) 960℃ (b) 1050℃(c) 1275℃(d) 1545℃