Question

if in given circuit power dissipation 150w then find the value of R in ohm

Answer 1

equivalent resistance=2R/(2+R)
i=(15/2R)*(2+R)


power=i²R=vi=150

put the value &find

Answer 2

Answer: 4 ohm

Explanation:

Equivalent resistance is 1/2+1/R=r+2/2r

Now by reciprocal we get 2r/2+r

Put the value by power formula

We get,

150= v×v/r

150=(15)(15)/r

2r(150)/2+r=225

300r=225r+450

R=4

Hence,solved