Physics · 2022
JEE Main · 27 June 2022, Shift 1 · Q52
A 220 V, 50 Hz AC source is connected to a 25 V, 5 W lamp and an additional resistance R in series (as shown in figure) to run the lamp at its peak…
A $\displaystyle 220$ V, $\displaystyle 50$ Hz AC source is connected to a $\displaystyle 25$ V, $\displaystyle 5$ W lamp and an additional resistance R in series (as shown in figure) to run the lamp at its peak brightness, then the value of R (in ohm) will be \_\_\_\_.
Official answer
975
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.