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Current Electricity

  1. Fourty electric bulbs are connected in series across a 220 V supply. After one bulb is fused the remaining 39 are connected again in series across the same supply. The illumination will be​​
    1. more with 40 bulbs than with 39 ​
    2. more with 39 bulbs than with 40 ​
    3. equal in both the cases ​
    4. ​in the ratio 40² : 39²
Correct Option: B

Since, the voltage is same for the two combinations, therefore H∝(1/R).. Hence, the combination of 39 bulbs will glow more.



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