Two ideal diodes are connected to a battery as shown in the circuit. The current supplied by the battery is

What is the output Y in the following circuit, when all the three inputs A, B, C are first 'zero' and then 'one'?

In the block diagram of simple rectifier circuit, from a variable a.c. voltage, constant d.c. voltage is obtained. The correct order of operation is

In the working of photodiode, the reverse current depends on