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Q.

For ensuring dissipation of same energy in all three resistors (R1, R2 and R3) connected as shown in figure, their values must be related as:

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a

R1 = R2 = R3

b

R2 = R3 and R1 = 4R2

c

R2 = R3 and R2 = 4R1

d

R1 = R2 + R3

answer is C.

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Detailed Solution

If R2 = R3 and R2 = 4R1, thenNow, PR1  =  V/32R1 =  V29R1PR2  =  2V/324R1 =  V29R1   and   PR3  =  2V/324R1 =  V29R1
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