Q2 of 35 Page 90

In the following circuits (Figure 12.2), heat produced in the resistor or combination of resistors connected to a 12 V battery will be

In figure (i), the value of net resistance R=2 Ω


In figure (ii), the value of net resistance R= 4 Ω


In figure (iii), the value of net resistance R = 1Ω


Heat is given by the formula: H = (V2× Time) /R


Since net resistance is minimum in figure (iii) and heat dissipated is inversely proportional to the resistance, so Heat dissipated will be maximum in case (iii)

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