First slide

KVL

Question

In the circuit shown below, the current that flows from a to b when the switch S is closed, is

Moderate

A

$- 1.5$
B

$+ 1.5$
C

+ 1.0 A
D

$- 1.0$

Solution

After closing the switch, $5 Ω$ will be shorted.
$I = \frac{10}{10} = 1 A \to This is from b to a .$
So current from a to $b = - I = 1 A$

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