You are given a resistance wire of length $50\, cm$ and a battery of negligible resistance. In which of the following cases is largest amount of heat generated
  • A
    When the wire is connected to the battery directly
  • B
    When the wire is divided into two parts and both the parts connected to the battery in parallel
  • C
    When the wire is divided into four parts and all the four connected to the battery in parallel
  • D
    When only half the wire is connected to the battery
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
    What is the equivalent resistance between  $A$ and $B$
    View Solution
  • 2
    With the help of potentiometer, we can determine the value of emf of a given cell. The sensitivity of the potentiometer is

    $(A)$ directly proportional to the length of the potentiometer wire

    $(B)$ directly proportional to the potential gradient of the wire

    $(C)$ inversely proportional to the potential gradient of the wire

    $(D)$ inversely proportional to the length of the potentiometer wire

    Choose the correct option for the above statements:

    View Solution
  • 3
    In the given circuit reading of ideal voltmeter is $\frac{E}{2}$ then internal resistance of cell is ............. $\Omega$
    View Solution
  • 4
    Three identical resistors $R_1=R_2=R_3$ are connected as shown to a battery of constant e.m.f. The power dissipated is ...........
    View Solution
  • 5
    Figure shows three similar lamp. $L_1,L_2$ and $L_3$ connected across a power supply. If the lamp $L_3$ fuses, how will the light emitted by $L_1$ and $L_2$ change ?
    View Solution
  • 6
    In the circuit shown, a four wire potentiometer is made of a $400\, cm$ long wire, which extends between $A$ and $B$. The resistance per unit length of the potentiometer wire is $r = 0.01\, \Omega /cm$. If an ideal voltmeter is connected as shown with jockey $J$ at $50\, cm$ from end $A$, the expected reading of the voltmeter will be: ............... $V$
    View Solution
  • 7
    Consider the circuit given here with the following parameters $E.M.F.$ of the cell = $12\, V$. Internal resistance of the cell $ = 2\,\Omega $. Resistance $R = 4\,\Omega $ Which one of the following statements in true
    View Solution
  • 8
    A storage battery is connected to a charger for charging with a voltage of $12.5\,\,Volts$. The internal resistance of the storage battery is $1\,\,\Omega$ . When the charging current is $0.5\,\,A$, the emf of the storage battery is: ............... $volts$
    View Solution
  • 9
    In the circuit shown in the figure, the switch $S$ is initially open and the capacitor is initially uncharged. $ I_1, I_2$ and $I_3$ represent the current in the resistance $2\,\Omega , 4\,\Omega $ and $8\,\Omega$ respectively.
    View Solution
  • 10
    The power rating of an electric motor which draws a current of $3.75\, amperes$ when operated at $200\, V$ is about
    View Solution