MCQ
Which is a wrong statement
  • A
    The Wheatstone bridge is most sensitive when all the four resistances are of the same order
  • In a balanced Wheatstone bridge, interchanging the positions of galvanometer and cell affects the balance of the bridge
  • C
    Kirchhoff's first law (for currents meeting at a junction in an electric circuit) expresses the conservation of charge
  • D
    The rheostat can be used as a potential divider

Answer

Correct option: B.
In a balanced Wheatstone bridge, interchanging the positions of galvanometer and cell affects the balance of the bridge
In a balanced Wheatstone bridge, interchanging the positions of galvanometer and cell affects the balance of the bridge

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

In order to forward bias a $PN$ junction, the negative terminal of battery is connected to
Voltmeters $\mathrm{V}_1$ and $\mathrm{V}_2$ are connected in series across a $D.C.$ line. $\mathrm{V}_1$ reads $80$ volts and has a per volt resistance of $200$ ohms. $\mathrm{V}_2$ has a total resistance of $32$ kilo ohms. The line voltage is
If a thin mica sheet of thickness $'t'$ and refractive index $\mu = 5/3$ is placed in the path of one of the interfering beams as shown in fig. then the displacement of the fringe system is
A uniform magnetic field of induction $B$ is confined to a cylindrical region of radius $R$. The magnetic field is increasing at a constant rate of $\frac{{dB}}{{dt}} (tesla/second)$. An electron is placed at the point $P$ on the periphery of the field experiences an acceleration
If $\mu_1$ and $\mu_2$ are the refractive indices of the materials of core and cladding of an optical fibre, then the loss of light due to its leakage can be minimised by having
A conducting ring of mass $2\,\, kg$ and radius $0.5\,\ m$ is placed on a smooth horizontal plane. The ring carries a current $i = 4A. A$ horizontal magnetic field $B = 10T$ is switched on at time $t = 0$ as shown in figure. The initial angular acceleration of the ring will be
In a series circuit $C = 2\,\mu F,\,\,L = 1\,mH$ and $R = 10\,\Omega .$ When the current in the circuit is maximum, at that time the ratio of the energies stored in the capacitor and the inductor will be
Some nuclei of a radioactive material are undergoing radioactive decay. The time gap between the instances when a quarter of the nuclei have decayed and when half of the nuclei have decayed is given as:

(where $\lambda$ is the decay constant)

Davission and Germer experiment proved
$_1{H^1}{ + _1}{H^1}{ + _1}{H^2} \to X + {\;_{ + 1}}{e^0} + $energy. The emitted particle is