Question

V₁, V₂ and V₃ are the p.ds. across the 1Ω, 2Ω and 3Ω resistors in the following diagram, and the current is 5 A.  

Which one of the columns (a) to (d) shows the correct values of V₁, V₂ and V₃measured in volts? 

           `V_1`   `V_2`  `V_3` 

(a)         1.0       2.0        3.0                    

(b)         5.0       10.0      15.0

(c)         5.0       2.5        1.6                 

(d)         4.0       4.0        2.0 

Answer 1

(b) V₁ = 5, V₂ = 10 and V₃ = 15

Because V = IR, the net voltage can be obtained by multiplying current with resistance.