Physics · 2020
JEE Main · 3 September 2020, Shift 1 · Q15
A 750 Hz, 20 V (rms) source is connected to a resistance of 100 Ω, an inductance of 0.1803 H and a capacitance of 10 μ F all in series. The time in…
A $\displaystyle 750 \mathrm{~Hz}, 20 \mathrm{~V}$ (rms) source is connected to a resistance of $\displaystyle 100 \Omega$, an inductance of $\displaystyle 0.1803$ H and a capacitance of $\displaystyle 10 \mu \mathrm{~F}$ all in series. The time in which the resistance (heat capacity $\displaystyle 2$ J/°C) will get heated by $\displaystyle 10^{\circ} \mathrm{C}$. (assume no loss of heat to the surroundings) is close to :
Official answer
(1)
$\displaystyle 348$ s
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.