When electric bulbs of same power, but different marked voltage are connected in series across the power line, their brightness will be :
  • A
    proportional to their marked voltage
  • B
    inversely proportional to their marked voltage
  • C
    proportional to the square of their marked voltage
  • D
    inversely proportional to the square of their marked voltage 
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
    Two equal resistances when connected in series to a battery, consume electric power of $60\,W.$ If these resistances are now connected in parallel combination to the same battery, the electric power consumed will be .............. $W$
    View Solution
  • 2
    Two bulbs of $(40 \;W, 200\; V)$ and $(100\; W, 200 \;V)$. Then correct relation for their resistance
    View Solution
  • 3
    If a wire of resistance $R$ is melted and recasted to half of its length, then the new resistance of the wire will be
    View Solution
  • 4
    Express which of the following setups can be used to verify Ohm’s law
    View Solution
  • 5
    Two indentical electric lamps marked $500\, W, \,\,220\, V$ are connected in series and then joined to a $110\, V$ line. The power consumed by each lamp is
    View Solution
  • 6
    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
  • 7
    A certain wire has a resistance $R$. The resistance of another wire identical with the first except having twice its diameter is
    View Solution
  • 8
    In the circuit, wire $1$ is of negligible resistance. Then,
    View Solution
  • 9
    In a potentiometer circuit a cell of $EMF$ $1.5\, {V}$ gives balance point at $36\, {cm}$ length of wire. If another cell of $EMF$ $2.5\, {V}$ replaces the first cell, then at what length of the wire, the balance point occurs ? (in $cm$)
    View Solution
  • 10
    See the electrical circuit shown in this figure. Which of the following equations is a correct equation for it ?
    View Solution