Question
The current $I$ in the given circuit will be $......A$

Answer

a
Given circuit is balanced wheat stone bridge Hence $2 \Omega$ can be neglected

$R_{\text {net }}=4 \Omega$

$I=\frac{40}{4}$

$I=10\,A$

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

Surface temperature of the sun is of the order of...........$K$
In an experiment, a small steel ball falls through a Iiquid at a constant speed of $10\, cm/s$. If the steel ball is pulled upward with a force equal to twice its effective weight, how fast will it move upward ? ......... $cm/s$
A body of mass $2\, kg$ moving with a velocity of $6\, m/s$ strikes inelastically another body of same mass at rest. The amount of heat evolved during collision is ............... $\mathrm{J}$
An electric dipole has a fixed dipole moment $\vec P$ which makes angle $\theta $ with respect to $x-$axis. When subjected to an electric field $\overrightarrow {{E_1}} $ $=E$$\hat i$ it experiences a torque $\overrightarrow {{T_1}} $ =$\;\tau \hat k$ When subjected to another electric field $\overrightarrow {{E_2}}  = \sqrt 3 {E_1}\hat j$ it experiences torque $\overrightarrow {{T_2}} $ = $ - \overrightarrow {{T_1}} $ The angle $\theta \;$ is.......$^o$
Four capacitors are connected in a circuit as shown in the figure. The effective capacitance in $\mu F$ between points $A$ and $B$ will be
A coil of inductance $2\, H$ having negligible resistance is connected to a source of supply whose voltage is given by $V=3 t$ volt. (where $t$ is in second). If the voltage is applied when $t =0,$ then the energy stored in the coil after $4\, s$ is ............ $J$.
A hot air balloon with a payload rises in the air. Assume that the balloon is spherical in shape with diameter of $11.7 \,m$ and the mass of the balloon and the payload (without the hot air inside) is $210 \,kg$. Temperature and pressure of outside air are $27^{\circ} C$ and $1 atm =10^5 \,N / m ^2$, respectively. Molar mass of dry air is $30 \,g$. The temperature of the hot air inside is close to .......... $^{\circ} C$ [The gas constant, $R=8.31 \,JK ^{-1} mol ^{-1}$ ]
A square loop of side $10 \mathrm{~cm}$ and resistance $0.7\  \Omega$ is placed vertically in east-west plane. A uniform magnetic field of $0.20 \mathrm{~T}$ is set up across the plane in north east direction. The magnetic field is decreased to zero in $1 \mathrm{~s}$ at a steady rate. Then, magnitude of induced emf is $\sqrt{\mathrm{x}} \times 10^{-3} \mathrm{~V}$. The value of $x$ is_____________.
Two batteries $V_1$ and $V_2$ are connected to three resistors as shown below. If $V_1=2 \,V$ and $V_2=0 \,V$, then the current $I=3 \,mA$. If $V_1=0 \,V$ and $V_2=4 \,V$, then the current $I=4 \,mA$. Now, if $V_1=10 \,V$ and $V_2=10 \,V$, then the current $I$ will be ............ $\,mA$
A system consists of two types of gas molecules $A$ and $B$ having same number density $2 \times$ $10^{25}\, / {m}^{3}$. The diameter of ${A}$ and ${B}$ are $10\, \stackrel{\circ}{{A}}$ and $5\, \stackrel{\circ}{{A}}$ respectively. They suffer collision at room temperature. The ratio of average distance covererd by the molecule $A$ to that of $B$ between two successive collision is $.....\,\times 10^{-2}$