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Physics Electricity CBSE Board 2026 Medium

(i) Two lamps ‘A’ and ‘B’ of rating 50 W; 220 V and 100 W, 220 V are connected in series combination. Find ou…

  1. (i)Two lamps ‘A’ and ‘B’ of rating 50 W; 220 V and 100 W, 220 V are connected in series combination. Find out the ratio of the resistances () of these lamps.
  2. (ii)Derive the expression for the equivalent resistance of three resistors , and connected in parallel combination.

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