Physics · 2026
JEE Main · 6 April 2026, Shift 1 · Q39
The maximum rated power of the LED is 2 mW and it is used in the circuit with input voltage of 5 V as shown in the figure below. The current through…
The maximum rated power of the LED is $\displaystyle 2$ mW and it is used in the circuit with input voltage of $\displaystyle 5$ V as shown in the figure below. The current through resistance $\displaystyle R_S$ is $\displaystyle 0.5$ mA .
The minimum value of the resistance of $\displaystyle R_S$, to ensure that the LED is not damaged is $\displaystyle \_\_\_\_$ $\displaystyle \mathrm{k} \Omega$.
Official answer
From NTA’s final answer key for this paper.
(2)
$\displaystyle 2$
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JEE Main 2026 Physics question, with the answer from NTA’s final answer key. Where our answers come from.