For given circuit potential difference V AB is-

Text Solution
Verified by ExpertsThe correct answer is:
A
Check the diode
Without the right branch, the two
resistors form a voltage divider across 30 V .

Since
is at positive potential with respect to the right branch, the diode is forward biased and conducts.
Equivalent circuit
The lower
resistor and the right-side
resistor are in parallel:

This
resistance is in series with the upper
resistor.

Circuit current

Find
is the voltage across the parallel combination (
):

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