There are $8$ equal resistances $R$. Two are connected in parallel, such four groups are connected in series, the total resistance of the system will be
  • A$R / 2$
  • B$2 R$
  • C$4 R$
  • D$8 R$
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 current source drives a current in a coil of resistance $R_1$ for a time $t$. The same source drives current in another coil of resistance $R_2$ for same time. If heat generated is same, find internal resistance of source.
    View Solution
  • 2
    In the given figure of meter bridge experiment, the balancing length $AC$ corresponding to null deflection of the galvanometer is $40\,cm$. The balancing length, if the radius of the wire $AB$ is doubled, will be $....cm$
    View Solution
  • 3
    What is the equivalent resistance between $A$ and $B$
    View Solution
  • 4
    Which of the four resistances $P, Q, R$ and $S$ generate the greatest amount of heat when a current flows from $A$ to $B$ ?
    View Solution
  • 5
    All wires have same resistance and equivalent resistance between $A$ and $B$ is $R$. Now keys are closed, then the equivalent resistance will become
    View Solution
  • 6
    Consider the circuits shown in the figure. Both the circuits are taking same current from battery but current through $R$ in the second circuit is $\frac{1}{{10}}$$^{th}$ of current through $R$ in the first circuit. If $R$ is $11$ $\Omega$, the value of $ R_1$ ................  $\Omega$
    View Solution
  • 7
    If current in an electric bulb changes by $1\%$, then the power will change by ............ $\%$
    View Solution
  • 8
    Potential difference across a cell and current through a cell is shown in graph. A battery consists of such identical $40$ cells. Max current supplied by the battery through a load of $2.5\,\Omega $ equal to .............. $A$
    View Solution
  • 9
    The current in the given circuit is ................ $A$
    View Solution
  • 10
    A cylindrical wire of radius $0.5 \,mm$ and conductivity $5 \times 10^{7}\, S / m$ is subjected to an electric field of $10 \,mV / m .$ The expected value of current in the wire will be $x ^{3} \,\pi mA$. The value of $x$ is ......
    View Solution