A bulb is first connected across a math xmlns=http://www.w3.org/199...

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A bulb is first connected across a math xmlns=http://www.w3.org/1998/Math/MathMLmn10/mnmi mathvariant=normalV/mi/math math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymiDC/mi/math supply and then a math xmlns=http://www.w3.org/1998/Math/MathMLmn20/mnmi mathvariant=normalV/mi/math math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymiDC/mi/math supply. The ratio of power dissipated in the two cases will be (resistance is constant)
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