When a potential difference is applied across the ends of a linear metallic conductor
  • A
    The free electrons are accelerated continuously from the lower potential end to the higher potential end of the conductor
  • B
    The free electrons are accelerated continuously from the higher potential end to the lower potential end of the conductor
  • C
    The free electrons acquire a constant drift velocity from the lower potential end to the higher potential end of the conductor
  • D
    The free electrons are set in motion from their position of rest
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
    A potentiometer wire of length $L$ and a resistance $r$ are connected in series with a battery of e.m.f. $E_0$ and a resistance $r_1$. An unknown e.m.f. $E$ is balanced at a length $l$ of the potentiometer wire. The e.m.f. $E$ will be given by
    View Solution
  • 2
    The battery in the diagram is to be charged by the generator $G$. The generator has a terminal voltage of $120$ $\mathrm{volts}$ when the charging current is $10$ $\mathrm{amperes}.$ The battery has an $\mathrm{emf}$ of $100$ $\mathrm{volts}$ and an internal resistance of $1$ $\mathrm{ohm}.$ In order to charge the battery at $10$ $\mathrm{amperes}$ charging current, the resistance $R$ should be set at ................ $\Omega$
    View Solution
  • 3
    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
  • 4
    A $5\, V$ battery with internal resistance $2\, \Omega$ and a $2\,V$ battery internal resistance  $1\, \Omega$ are connected to a $10\, \Omega$ resistor as shown in the figure. The current in the $10\, \Omega$ resistor is :-
    View Solution
  • 5
    In the circuit shown in the figure, the switch $S$ is initially open and the capacitor is initially uncharged. $ I_1, I_2$ and $I_3$ represent the current in the resistance $2\,\Omega , 4\,\Omega $ and $8\,\Omega$ respectively.
    View Solution
  • 6
    Ohm's law is true
    View Solution
  • 7
    A series combination of two resistors $1\,\Omega $ each is connected to a $12\,V$ battery of internal resistance $0.4\,\Omega $. The current flowing through it will be ............... $A$
    View Solution
  • 8
    For the shown circuit, find the effective resistance between the points $A$ and $B$.
    View Solution
  • 9
    If the resistivity of a potentiometer wire be $\rho $ and area of cross-section be $A$, then what will be potential gradient along the wire
    View Solution
  • 10
    What is the reading of voltmeter in the following figure .............. $V$
    View Solution