Question

Two resistor of resistance 10 and 20 Ohm are join parallel a potential difference of 12 V is apply across the combination find the power consume by 20 Ohm resistor

Answer 1

Answer:

The mass of the moon is (1/8) of the earth but the gravitational pull is (1/6) of the earth. It is due to the fact tha

Then Denominator=2x+1

Fraction =2x+1x

Reciprocal of the fraction =x2x+1

It is given that the sum fo the fraction and its reciprocal is 22116

∴2x+1x+x2x+1=22116

⇒x(2x+1)x2+(2x+1)2=2158⇒2x2+x5x2+4x+1=2158

⇒21(5x2+4x+1)=58(2x2+x)⇒105x2+84x+21=116x

⇒11x2−26x−21=0⇒11x2−33x+7x−21=0⇒11x(x−3)+7(x−3)=0

⇒(11x+7)(x−3)=0⇒x=3,−117

∵ x can not be a negative 

⇒x=3