Physics · 2022
JEE Main · 29 June 2022, Shift 1 · Q51
Two coils require 20 minutes and 60 minutes respectively to produce same amount of heat energy when connected separately to the same source. If they…
Two coils require $\displaystyle 20$ minutes and $\displaystyle 60$ minutes respectively to produce same amount of heat energy when connected separately to the same source. If they are connected in parallel arrangement to the same source; the time required to produce same amount of heat by the combination of coils, will be \_\_\_\_ min.
Official answer
15
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