In figure , assuming the diodes to be ideal ,

Options

A. (a) ` D_1 ` is forward biased and ` D_2` is reverse biased and hence current flows from A to B.
B. ` D_2 ` is forward biased and `D_1` is reverse biased and hence no current flows from B to A and vice - versa.
C. `D_1` and `D_2` are both forward biased and hence current flows from A to B.
D. `D_1` and `D_2` are both reverse biased and hence no current flows from A to B and vice versa.

Answer

B

Explanation

For diode ` D_1 `
` V_p - V_n = - 10 -10 = -10 V `
So, ` D_1` is in reverse bias.
For diode `D_2` ,
` V_p - V_n = 0 - (-10) = 10 V`
` So, ` D_2 ` is in forward bias.