eoo TMobile LTE 1118 PM sessionmasteringphysicscom Problem 2

eoo T-Mobile LTE 11:18 PM session.masteringphysics.com Problem 22.1 MasteringPhysics The unspecified currents in Q Tap image to zoom are 1A = 4 A and ID = 2 A . The directions of the currents are as noted. Part A What is the value of current Ic in the figure? amp C- Submit Give Up

Solution

Here, we will use the Kirchhoff\'s junction rule which states that the amount of current entering a junction is equal to the amount of current leaving it.

Now for the given circuit we have:

Part A.) Applying the junction rule on the left hand side junction we get:

Ic + I_A = 7

or, Ic = 7 - I_A = 7 - 4 = 3 amperes is the required current

Part B.) Again, applying the junction rule on the right hand side junction we get:

I_B = Ic + I_D

or, I_B = 3 + 2 = 5 amperes is the required current