Consider the electric circuit in the fiqure below with the following parameters

Question

Consider the electric circuit in the fiqure below with the following parameters E1-24.00 V, E2 12.00 V, R1-900 2, R3-400 2 oV What is the potential at point B? 2 ohm Hints: The potential should not be hard to find Try to walk from the point with zero potential to the point in question crossing elements with known voltage di Submit Answer Incompatible units. No conversion found between "ohm" and the required units.Tries 1/20 Previous Tries Calculate the current 3. 0.030 A Hints: You will need both Kirchhoff rules. The three currents are the three unknown quantities in the problem Use the first Kirchhoff rule to write a condition for the algebraic sum of the currents. You will need two more equations Therefore pick two loops, and use the second rule on them You now have three equations and three unknowns. Solve the system. Submit Answer Submission not graded. Use more digits. Tries 1/20 Previous Tries Calculate the current 1 0.01333 mA Hint: See previous hint. Submitnswer Incorrect. Tries 3/20 Previous Tries

Explanation / Answer

Given,

e1 = 24 V ; e2 = 12 V ; R1 = 900 Ohm ; R3 = 400 Ohm

a)V(B) = e2 = 12 V

Hence, Vb = 12 Volts

b)i3 = E2/R3 = 12/400 = 0.03 A

Hence, i3 = 0.03 A = 30 milli Amperes

c)Va - Vb = i1 R1

e1 - Vb = i1 R1

i1 = (e1 - Vb)/R1 = (24 - 12)/900 = 0.013 A

Hence, i1 = 0.013 A = 13 milli Amperes

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