If two bulbs of wattage $25$ and $30$, each rated at $220\, volts$, are connected in series with a $440$ $volt$ supply, which bulb will fuse
  • A$25\, W$ bulb
  • B$30\, W$ bulb
  • C
    Neither of them
  • D
    Both of them
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 cylindrical copper rod has length $L$ and resistance $R$. If it is melted and formed into another rod of length $2 L$, then the resistance will be ....... $R$
    View Solution
  • 2
    Fig. shows rough sketch of meter bridge. $(G)$ deflects zero at length $l\, cm$. Now $R_1$ and $R_2$ are interchanged then balancing length increases by $25\, cm$. Find $R_1/R_2$ 
    View Solution
  • 3
    A metal wire has a resistance of $35 \,\Omega$. If its length is increased to double by drawing it, then its new resistance will be (in $\Omega$)
    View Solution
  • 4
    The charge flowing in a conductor varies with time as $Q = at -bt^2$. Then for current, which statement is incorrect.
    $(A)$ decreases linearly with time
    $(B)$ reaches a maximum and then decreases
    $(C)$ fall to zero after time $t = a/2b$
    $(D)$ changes at a rate $-2b$
    Options :
    View Solution
  • 5
    A piece of wire of resistance $4\, ohms$ is bent through $180^o$ at its mid point and the two halves are twisted together, then the resistance is ............ $ohms$
    View Solution
  • 6
    A $1\,\mu F$ capacitor is connected in the circuit shown below. The emf of the cell is $3\ volts$ and internal resistance is $0.5\ ohms$ . The resistors $R_1$ and $R_2$ have values $4\ ohms$ and $1\ ohm$ respectively. The charge on the capacitor in steady state must be.......$\mu C$
    View Solution
  • 7
    The current from the battery in the given circuit is ................ $A$
    View Solution
  • 8
    A wire of resistance $12\,ohms$ per meter is bent to form a complete circle of radius $10\, cm.$ The resistance between its two diametrically opposite points, $A$ and $B$ as shown in the figure is
    View Solution
  • 9
    Find the error in reading of voltmeter ................ $\%$
    View Solution
  • 10
    For the circuit shown, with ${R_1} = 1.0\,\Omega $, ${R_2} = 2.0\,\Omega $, ${E_1} = 2\,V$ and ${E_2} = {E_3} = 4\,V$, the potential difference between the points $‘a’$ and $‘b’$ is approximately (in $V$)
    View Solution