Which of the following is not a correct statement
  • A
    Resistivity of electrolytes decreases on increasing temperature
  • B
    Resistance of mercury falls on decreasing its temperature
  • CWhen joined in series a $40\, W$ bulb glows more than a $60\, W$ bulb
  • DResistance of $40\, W$ bulb is less than the resistance of $60\, W$ bulb
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
    The value of the resistance $R$ in figure is adjusted such that power dissipated in the $2\,\Omega $ resistor is maximum. Then the power dissipated in the $2\,\Omega $ will be ................ $W$
    View Solution
  • 2
    Figure shows three resistor configurations $\mathrm{R} 1, \mathrm{R} 2$ and $\mathrm{R} 3$ connected to $3 \mathrm{~V}$ battery. If the power dissipated by the configuration $\mathrm{R} 1, \mathrm{R} 2$ and $\mathrm{R} 3$ is $\mathrm{P} 1, \mathrm{P} 2$ and $\mathrm{P} 3$, respectively, then

    Figure:

    View Solution
  • 3
    In the circuit shown in the figure, the current flowing in $2\,\Omega $ resistance ............... $A$
    View Solution
  • 4
    In the following circuit composed of identical resistors, across which terminals would you connect a battery in order to dissipate energy in all resistors 
    View Solution
  • 5
    Assume a hypothetical wire in which free electron density changes with temperature in proportionality $n\ \alpha \ T$ assuming $\tau $(Relaxation time of collision) and dimensions of wire remain unchanged with increasing temperature. Which one of the resistance $v/s$ temperature graph is true
    View Solution
  • 6
    Correct set up to verify Ohm's law is
    View Solution
  • 7
    Refer to the circuit shown. What will be the total power dissipation in the circuit if $P$ is the power dissipated in $R_1$ ? It is given that $R_2=4 R_1$ and $R_3=12 R_1$ are .......... $P$
    View Solution
  • 8
    The potential difference across $8\, ohm$ resistance is $48\, volt$ as shown in the figure. The value of potential difference across $X$ and $Y$ points will be ............. $volt$
    View Solution
  • 9
    Voltmeters $V_1$ and $V_2$ are connected in series across a $D.C.$ line. $V_1$ reads $80\, volts$ and has a per volt resistance of $200 \,\Omega$. $V_2$ has a total resistance of $32 \,kilo-ohms$. The line voltage is ............. 
    View Solution
  • 10
    $I-V$ characteristic of a copper wire of length $L$ and area of cross-section $A$  is shown in figure. The slope of the curve becomes
    View Solution