The terminal potential difference of a cell is greater than its $e.m.f.$ when it is
  • A
    Being discharged
  • B
    In open circuit
  • C
    Being charged
  • D
    Being either charged or discharged
Easy
art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    Consider a wire having current $10\,A$ having area of crossection $1\,cm^2$. If number of electrons per unit volume is $9 \times 10^{28}\, m^{-3}$. Find the drift velocity of electrons
    View Solution
  • 2
    In a circuit shown in the figure, the capacitor $C$ is initially uncharged and the key $K$ is open. In this condition, a current of $1 \mathrm{~A}$ flows through the $1 \Omega$ resistor. The key is closed at time $t=t_0$. Which of the following statement($s$) is(are) correct?

    [Given: $\mathrm{e}^{-1}=0.36$ ]

    ($A$) The value of the resistance $R$ is $3 \Omega$.

    ($B$) For $t$

    ($C$) At $t=t_0+7.2 \mu \mathrm{s}$, the current in the capacitor is $0.6 \mathrm{~A}$.

    ($D$) For $t \rightarrow \infty$, the charge on the capacitor is $12 \mu C$.

    View Solution
  • 3
    Consider a $72\, cm$ long wire $AB$ as shown in the figure. The galvanometer jockey is placed at $P$ on $A B$ at a distance $x cm$ from $A$. The galvanometer shows zero deflection.

    The value of $x,$ to the nearest integer, is ..... $cm$

    View Solution
  • 4
    In the Wheatstone's bridge shown, $P = 2\,\Omega ,$ $Q = 3\,\Omega ,$ $R = 6\,\Omega $ and $S = 8\,\Omega $. In order to obtain balance, shunt resistance across '$S$' must be .............. $\Omega$
    View Solution
  • 5
    Four equal capacitors are connected to a battery as shown in the adjoining figure. The potential of $A$ and $B$ are
    View Solution
  • 6
    In an experiment of meter bridge, a null point is obtained at the centre of the bridge wire. When a resistance of $10\, ohm$ is connected in one gap, the value of resistance in other gap is ............. $\Omega$
    View Solution
  • 7
    In the circuit here, the steady state voltage across capacitor $C$ is a fraction of the battery $e.m.f.$ The fraction is decided by
    View Solution
  • 8
    The resistivity of a wire
    View Solution
  • 9
    A uniform metallic wire carries a current $2\,A$. when $3.4\,V$ battery is connected across it. The mass of uniform metallic wire is $8.92 \times 10^{-3} \,kg$. density is $8.92 \times 10^3\,kg / m ^3$ and resistivity is $1.7 \times 10^{-8} \Omega- m$. The length of wire is $l=............\,m$
    View Solution
  • 10
    Assertion : Kirchoff 's junction rule follows from conservation of charge.

    Reason : Kirchoff 's loop rule follows from conservation of momentum.

    View Solution