Q1:

The diode and the moving coil milliammeter of figure are assumed to be ideal. The meter reading is

ANS:D -

Since both, the diodes are in the forward bias condition so they act as a closed switch.

For a half wave rectifier,
Vdc = Vm/π.
Vm = 1V.

The resistors are in parallel so,
Req. = 200k / (20k + 10k) ohm.
By ohm's law, V = iR.
i = 1/π[3/ 20] mA.

Current through milli ammeter.
I = i*(2/3).
= 1/π(10) mA.

I = 0.1/πmA