The circuit shown in the diagram below consists of four diff

The circuit shown in the diagram below consists of four different resistors and a battery. You don\'t know the strength of the battery or the value of any of the 4 resistances. Which expression(s) will be equal to the voltage of the battery in the circuit, where V_A (for example) is the voltage drop across resistor A. a. V_A + V_B b. V_A + V_C c. V_B + V_C d. V_A + V_B + V_C e. V_A + V_B + V_C + V_D f. V_A + V_D g. V_D

Solution

a,b,g

let A, B , C , D have voltage Va , Vb,Vc,Vd

VB = VC

as both are in parallel

and both are connected to A in series

so any to add with A will give full votage of central wire = emf of the battery

D is full wire hence VD = emf of battery

Full wire means it should be meeting to both + , - terminal of battery