Question

If three resisters R1=2ohm and R2=5ohm and R3=1ohm are connected in series then the equivalent resisitance will be (a)11ohm (b)8ohm(c)10ohm (d)12ohm

Answer 1

R=R1+R2+R3

so, R=2+5+1=8

therefore, b)8 ohm

Answer 2

Equivalent resistance , R = R1 + R2 + R3

R = 2 + 5 + 1

R = 8 ohm

Hence , The correct answer is (b) 8 ohm