Download App
The heat developed in an electric wire of resistance $R$ by a current $I$ for a time $t$ is
  • A$\frac{{{I^2}Rt}}{{4.2}}cal$
  • B$\frac{{{I^2}t}}{{4.2R}}cal$
  • C$\frac{{{I^2}R}}{{4.2\,t}}cal$
  • D$\frac{{Rt}}{{4.2\,{I^2}}}cal$
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.*
Download App

Similar Questions

  • 1
    The current in the given circuit is ............ $A$
    View Solution
  • 2
    Which one is not the correct statement
    View Solution
  • 3
    Consider the circuit shown in the figure. The current ${I_3}$ is equal to
    View Solution
  • 4
    Find potential difference across $24\,\Omega $ ............. $\mathrm{volt}$
    View Solution
  • 5
    In the given network current through branch $BG$ is almost equal to ............ $A$
    View Solution
  • 6
    A wire of resistance $160\,\Omega$ is melted and drawn in wire of one-fourth of its length. The new resistance of the wire will be $......\Omega$
    View Solution
  • 7
    Resistance of a carbon resistor determined from colour codes is $(22000 \pm 5 \%) \Omega$. The colour of third band must be :
    View Solution
  • 8
    In the circuit shown $E, F, G$ and $H$ are cells of $\mathrm{e.m.f.}$ $2\,V, 1\,V, 3\,V$ and $1\,V$ respectively and their internal resistances are $2\,\Omega , 1\,\Omega , 3\,\Omega$ and $1\,\Omega$ respectively.
    View Solution
  • 9
    .............. $A$ the current flowing through the resistance $R_2$ of the circuit shown in fig if the resistance are equal to $R_1 = 20\  \Omega, R_2 = 30 \ \Omega$ and $R_3 = 60 \ \Omega$ and potentials of points $1, 2$ and $3$ are equal to $V_1= 20\, V,$ $V_2 = 30\ V$ and $V_3 = 60\ V$
    View Solution
  • 10
    Find the maximum charge on the capacitor $C$ in the following circuit ............ $\mu C$
    View Solution