Physics · 2022
JEE Main · 24 June 2022, Shift 2 · Q47
An electric bulb is rated as 200 W. What will be the peak magnetic field at 4 m distance produced by the radiations coming from this bulb? Consider…
An electric bulb is rated as $\displaystyle 200$ W . What will be the peak magnetic field at $\displaystyle 4$ m distance produced by the radiations coming from this bulb? Consider this bulb as a point source with $\displaystyle 3.5$% efficiency.
Official answer
(2)
$\displaystyle 1.71 \times 10^{-8} T$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.