MCQ
When two identical capacitors are in series have 3mF capacitance and when parallel 12mF. What is the capacitance of each
  • 6 μF
  • B
    3 μF
  • C
    12 μF
  • D
    9 μF

Answer

Correct option: A.
6 μF
6 μF

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

Source of Sun's energy is
A particle, of mass $10^{-3} kg$ and charge $1.0 C$, is initially at rest. At time $t =0$, the particle comes under the influence of an electric field $\dot{E}( t )= E _0 \sin \omega t \hat{ i }$, where $E _0=1.0 N C ^{-1}$ and $\omega=10^3 rad s ^{-1}$. Consider the effect of only the electrical force on the particle. Then the maximum speed, in $m s ^{-1}$, attained by the particle at subsequent times is. . . . . .
A photoelectric cell is a device which?
If the wavelength of electromagnetic radiation is doubled, what will happen to the energy of photons?
The charge (in $\mu C$) on any one of the $2\,\mu F$ capacitor and $1\,\mu F$capacitor will be given respectively as
A stream of a positively charged particles having $\frac{ q }{ m }=2 \times 10^{11} \frac{ C }{ kg }$ and velocity $\overrightarrow{ v }_0=3 \times 10^7 \hat{ i ~ m} / s$ is deflected by an electric field $1.8 \hat{ j } kV / m$. The electric field exists in a region of $10 cm$ along $x$ direction. Due to the electric field, the deflection of the charge particles in the $y$ direction is $...........mm$
An alternating voltage$\text{V}=200\sqrt{2}\sin100\text{t},$ Where $V$ is in volt and t is in seconds, is connected to a series combination of $1\mu\text{F}$ capacitor and $10\text{k}\Omega$ resistor through an $AC$ ammeter. The reading of the ammeter will be $.....$
When a charged particle enters a uniform magnetic field its kinetic energy
Two small spheres each having the charge $ + Q$ are suspended by insulating threads of length $L$ from a hook. This arrangement is taken in space where there is no gravitational effect, then the angle between the two suspensions and the tension in each will be
A message signal of frequency $5\,kHz$ is used to modulate a carrier signal of frequency $2\,MHz$. The bandwidth for amplitude modulation is $..........\,kHz$