Forty electric bulbs are connected in series across a $220\,\,V$ supply. After one bulb is fused, the remaining ${\rm{39}}$ are connected again in series across the same supply. The illumination will be

More with ${\rm{39}}$ bulbs than with ${\rm{40}}$

More with ${\rm{40}}$ bulbs than with 39

In the ratio of ${49^2}:{39^2}$

JEE PHYSICS MCQ: CURRENT ELECTRICITY

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Analyzing +4 | -1

Forty electric bulbs are connected in series across a

220\,\,V

supply. After one bulb is fused, the remaining

\mathrm{39}

are connected again in series across the same supply. The illumination will be

View answer and explanation

Correct option: B

More with

\mathrm{39}

bulbs than with

\mathrm{40}

Option B (More with

\mathrm{39}

bulbs than with

\mathrm{40}

) is correct because with fewer bulbs, the total resistance decreases, increasing the current and thus the illumination.