The equivalent resistance across $AB$ would be ............ $\Omega$
  • A$6$
  • B$8$
  • C$12$
  • D$20$
Medium
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
    It is preferable to measure the $e.m.f.$ of a cell by potentiometer than by a voltmeter because of the following possible reasons.
    $(i)$ In case of potentiometer, no current flows through the cell.
    $(ii)$ The length of the potentiometer allows greater precision.
    $(iii)$ Measurement by the potentiometer is quicker.
    $(iv)$ The sensitivity of the galvanometer, when using a potentiometer is not relevant.
    Which of these reasons are correct?
    View Solution
  • 2
    A cell of internal resistance $r$ is connected across an external resistance $n r$. Then the ratio of the terminal voltage to the emf of the cell is
    View Solution
  • 3
    Find the value of current from battery in the circuit ............... $A$
    View Solution
  • 4
    Find out equivalent resistance between $A$ and $B$
    View Solution
  • 5
    Four wires $AB,\,\,BC,\,\,CD,\,\,DA$ of resistance $4\, \Omega$ each and a fifth wire $BD$ of resistance $8\, \Omega$ are joined to form a rectangle $ABCD$ of which $BD$ is a diagonal. The effective resistance between the points $A$ and $B$ is
    View Solution
  • 6
    In the ladder network shown, current through the resistor $3\, \Omega$ is $0.25\,A$. The input voltage $'V'$ is equal to:- ........... $V$
    View Solution
  • 7
    An electric kettle has two coils. When one of these is switched on, the water in the kettle boils in $6\,\min$ . When the other coil is switched on, the water boils in $3\,\min$. If the two coils are connected in series, the time taken to boil the water in the kettle is ............. $min$
    View Solution
  • 8
    In a potentiometer arrangement, a cell gives a balancing point at $75\, cm$ length of wire. This cell is now replaced by another cell of unknown emf. If the ratio of the emf's of two cells respectively is $3: 2$, the difference in the balancing length of the potentiometer wire in above two cases will be.........$cm .$
    View Solution
  • 9
    Figure shows a cross-section of a large-section of an infinite metal sheet carrying an electric current along its surface. The current per unit length is $J$ . A current carrying square loop is placed nearby the metal sheet such that the plane of square is perpendicular to the plane of sheet then 
    View Solution
  • 10
    In the given figure, the charge stored in $6 \ \mu \mathrm{F}$ capacitor, when points $A$ and $B$ are joined by a connecting wire is___________ $\mu \mathrm{C}$.
    View Solution