MCQ
Each capacitor in the circuit shown is a $1F$ capacitor. What would be the equivalent capacitance between $A$ and $B?$
- A$0.5F$
- ✓$F$
- C$2F$
- D$4F$
✓
Answer
Correct option: B.
$F$
Equivalent capacitance of each pair of capacitance in series$=\frac{1\times1}{1+1}\text{F}=0.5\text{F}$
The two series combination are connected in parallel. Hence the net capacitance becomes $0.5F + 0.5F = 1F$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
If ${\lambda _p}$ and ${\lambda _\alpha }$ be the de-Broglie's wavelengths associated with protons and $\alpha - $ particles of equal kinetic energies, then
→The equivalent inductance of two inductances is 2.4 henry when connected in parallel and 10 henry when connected in series. The difference between the two inductances is
A coil is placed in a time varying magnetic field. If the number of turns in the coil were to be halved and the radius of wire doubled, the electrical power dissipated due to the current induced in the coil would be:
(Assume the coil to be short circuited.)
In an ac circuit, phase of current lags the phase of voltage by an angle of $\frac{\pi}{3}$. The component in the circuit is :
→Two long and parallel straight wires $A$ and $B$ carrying currents of $8.0\; A$ and $5.0\; A$ in the same direction are separated by a distance of $4.0\; cm$. Estimate the force on a $10\; cm$ section of wire $A.$
→A thin strip $10\, cm$ long is on a $U$ shaped wire of negligible resistance and it is connected to a spring of spring constant $0.5\,Nm^{-1}$ (see figure). The assembly is kept in a uniform magnetic field of $0.1\, T$. If the strip is pulled from its equilibrium position and released, the number of oscillations it performs before its amplitude decreases by a factor of $e$ is $N$. If the mass of the strip is $50\, grams$, its resistance $10\,\Omega $ and air drag negligible, $N$ will be close to
→The ratio of thermionic currents $(I/I0)$ for a metal when the temperature is slowly increased ${T_0}$ to $T$ as shown in figure. ($I$ and $I_0$ are currents at $T$ and $T_0$ respectively). Then which one is correct?
→Assertion : The resistance of super-conductor is zero.
Reason : The super-conductors are used for the transmission of electric power.
Reason : The super-conductors are used for the transmission of electric power.
If a message signal of frequency $^{\prime} f _{ m } ^{\prime}$ is amplitude modulated with a carrier signal of frequency $^{\prime} f _{ c } ^{\prime}$ and radiated through an antenna, the wavelength of the corresponding signal in air is ....... .
→Two photons having $.......$
→