First slide

Diodes

Question

In the given circuit, the current through the battery is

Moderate

A

0.5 A
B

1 A
C

1.5 A
D

2 A

Solution

$D 1 i s i n r e v e r s e b i a s, a n d D 2, D 3 i n f o r w a r d b i a s R_{e q} = \frac{10 \times 20}{10 + 20} = \frac{20}{3} Ω$
$C u r r e n t t h r o u g h b a t t e r y = i = \frac{10}{\frac{20}{3}} = 1.5 A$

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