An electric bulb should be connected to how much voltage line if it draws an electric current of $0.5\, A$, the resistance of filament of that bulb being $440\, \Omega$.
An electric bulb should be connected to how much voltage line if it draws an electric current of $0.5\, A$, the resistance of filament of that bulb being $440\, \Omega$.
- A
$110\;Omega$
- B
$440\;Omega$
- C
$484\;Omega$
- D
$880\;Omega$
Similar Questions
An electric iron has a rating of $750\, W ; 200\, V$. Calculate
$(i)$ the current required.
$(ii)$ the resistance of its heating element.
$(iii)$ energy consumed by the iron in $2$ hours.
An electric iron has a rating of $750\, W ; 200\, V$. Calculate
$(i)$ the current required.
$(ii)$ the resistance of its heating element.
$(iii)$ energy consumed by the iron in $2$ hours.
$1\, kW h =3.6 \times 10^{6}$ joule.
$1\, kW h =3.6 \times 10^{6}$ joule.
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Out of the two, a toaster of $1\, kW$ and an electric heater of $2\, kW$, which has a greater resistance ?
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The $V-I$ graphs for two resistors of the same material and the same radii with lengths $L_{1}$ and $L_{2}$ are shown below. If $L_{1}>L_{2}$, state with reason, which of these graphs represents voltage-current change for $L_{1}$.
The $V-I$ graphs for two resistors of the same material and the same radii with lengths $L_{1}$ and $L_{2}$ are shown below. If $L_{1}>L_{2}$, state with reason, which of these graphs represents voltage-current change for $L_{1}$.