A 2V battery is connected across the points A and B as shown in the figure given below . Assuming that the resistance of each diode is zero in forward bias and infinity in reverse bias , the current supplied by the battery when its positive terminal is connected to A is

Options

A. 0.2 A
B. 0.4 A
C. Zero
D. 0.1 A

Answer

A

Explanation

Since diode in upper branch is forward biased and in lower branch is reversed biased. So current through circuit `i=V/(R+r_d)` , here `r_d = ` diode resistance in forward baising = 0
`implies i=V/R=2/10=0.2A`