JEE Physics Practice Question
In a circuit, a metal filament lamp is connected in series with a capacitor of capacitance $\mathrm{C} \mu F$ across a $200 \mathrm{~V}, 50 \mathrm{~Hz}$ supply. The power consumed by the lamp is $500 \mathrm{~W}$ while the voltage drop across it is $100 \mathrm{~V}$. Assume that there is no inductive load in the circuit. Take rms values of the voltages. The magnitude of the phase-angle (in degrees) between the current and the supply voltage is $\varphi$. Assume, $\pi \sqrt{3} \approx 5$. What is the value of $C$?
Want to know if you got it right?
Answer this and thousands more real JEE previous-year questions free, get graded instantly, and climb the global ranked leaderboard.
Practice JEE free →More JEE Physics questions
- A metal is heated in a furnace where a sensor is kept above the metal surface to read the …
- The isotope { }_{5}^{12} \mathrm{~B} having a mass 12.014 u undergoes \beta-decay to { }_{…
- A hydrogen atom in its ground state is irradiated by light of wavelength 970 A. Taking h c…
- Consider two solid spheres \mathrm{P} and \mathrm{Q} each of density 8 \mathrm{gm} \mathrm…
- Two inductors L_{1} (inductance 1 \mathrm{mH}, internal resistance 3 \Omega ) and L_{2} (i…
- A drop of liquid of radius \mathrm{R}=10^{-2} \mathrm{~m} having surface tension \mathrm{S…
- An electron in a hydrogen atom undergoes a transition from an orbit with quantum number n_…
- A stationary source emits sound of frequency f_{0}=492 \mathrm{~Hz}. The sound is reflecte…