Electricity Q36(a) — Class 10 Physics Solution

Physics-10th Electricity CBSE Board 2025 Medium

(i)If $R_{s}$ and $R_{p}$ respectively are the total resistances of the series and parallel combinations of the three resistors of resistances $R_{1}$ , $R_{2}$ and $R_{3}$ , then write the relationships among (I) $R_{s}$ , $R_{1}$ , $R_{2}$ and $R_{3}$ and (II) $R_{p}$ , $R_{1}$ , $R_{2}$ and $R_{3}$ .
(ii)An electric oven operates on the mains voltage of 220 V. This oven consumes $2.2$ kWh of electrical energy in one hour. Calculate : (I) power rating of the oven, (II) current drawn by the oven, and (III) resistance of the oven when in operation.

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