Physics · 2021
JEE Main · 26 August 2021, Shift 2 · Q17
An electric bulb of 500 watt at 100 volt is used in a circuit having a 200 V supply. Calculate the resistance R to be connected in series with the…
An electric bulb of $\displaystyle 500$ watt at $\displaystyle 100$ volt is used in a circuit having a $\displaystyle 200$ V supply. Calculate the resistance R to be connected in series with the bulb so that the power delivered by the bulb is $\displaystyle 500$ W.
Official answer
(1)
$\displaystyle 20 \Omega$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.