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Q.

The value of current i in the circuit shown in the figure is


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a

3 A      

b

23 A

c

-3 A

d

13 A 

answer is D.

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Detailed Solution

Kirchhoff's Current Law states that "the algebraic sum of all currents entering and exiting a node must equal zero." This law describes how a charge enters and exits a wire junction point, also known as a node on a wire. So, at point O, the current equation are as follows
10 + 3 = i A
i A= 13 A
 
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The value of current i in the circuit shown in the figure is