BITSAT 2018 Slot 2 Solved Paper

In the given circuit, diode D1 is reverse biased, so it will not conduct but D2,D3 are forward biased, so they will conduct, hence corresponding equivalent circuit. For the given circuit is Now, the equivalent resistance of the circuit is
Req=

(5+5)×20

(5+5)+20

+

20

3

Ω
Current through battery, I=

10v

20 3 Ω

=1.5A