A current of $2\, mA$ was passed through an unknown resistor which dissipated a power of $4.4\, W$. Dissipated power when an ideal power supply of $11\, V$ is connected across it is
  • A$11\times10^{-5}\, W$
  • B$11\times10^{-3}\, W$
  • C$11\times10^{-4}\, W$
  • D$11\times10^{5}\, W$
JEE MAIN 2019, 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
    The figure shows three circuits $I, II$ and $III$ which are connected to a $3\,V$ battery. If the powers dissipated by the configurations $I, II$ and $III$ are $P_1 , P_2$ and $P_3$ respectively, then
    View Solution
  • 2
    Effective resistance between $A$ and $B$ is ........... $\Omega$
    View Solution
  • 3
    What are the charges stored in the $1 \,\mu F$ and $2 \,\mu F$ capacitors in the circuit below, once the currents become steady?
    View Solution
  • 4
    The circuit below is used to heat water kept in a bucket. Assuming heat loss only by Newton's law of cooling, the variation in the temperature of the water in the bucket as a function of time is depicted by
    View Solution
  • 5
    A heater is designed to operate with a power of $1000 \mathrm{~W}$ in a $100 \mathrm{~V}$ line. It is connected in combination with a resistance of $10 \Omega$ and a resistance $R$, to a $100 \mathrm{~V}$ mains as shown in figure. For the heater to operate at $62.5 \mathrm{~W}$, the value of $\mathrm{R}$ should be .................. $\Omega$.
    View Solution
  • 6
    Lamps used for household lighting are connected in
    View Solution
  • 7
    Five resistors of given values are connected together as shown in the figure. The current in the arm $BD$ will be
    View Solution
  • 8
    A potentiometer consists of a wire of length $4\, m$ and resistance $10 \,\Omega$. It is connected to cell of $emf$ $2\, V$. The potential difference per unit length of the wire will be ............ $V/m$
    View Solution
  • 9
    The voltage $V$ and current $I$ graph for a conductor at two different temperatures ${T_1}$ and ${T_2}$ are shown in the figure. The relation between ${T_1}$ and ${T_2}$ is
    View Solution
  • 10
    The internal resistance of a primary cell is $4\, ohm$. It generates a current of $0.2\, amp$ in an external resistance of $21\, ohm$. The rate at which chemical energy is consumed in providing the current is .............. $J/s$
    View Solution