The emfs and resistance in the circuit (as shown in the figure) have the following values.

Options

A. 200mA
B. 150mA
C. 230mA
D. 400mA

Answer

3

Explanation

Applying kirchhoff's loop rule to loop AB CDA , we will get

`-ir_(1)+E_(1)-E_(2)-ir_(2)-iR=0`
`-i(r_(1)+r_(2)+R)+E_(1)-E_(2)=0`
`-i(2.3+1.8+5.9) +4.4-2.1=0`
`-10i= -2.3`
or `i=0.23A=230mA`