Question

An experiment was set up with the circuit diagram shown. Assume

R₁ = 12 Ω,

R₂ = R₃ = 6 Ω,

r = 0 Ω

and

E = 6 V.

(a)

One of the steps to examine the set-up is to test points with the same potential. Which of the following points can be tested?

points b, c, and dpoints d, e, and f    points f, h, and jpoints a, h, and i

(b)

At which three points should the currents be measured so that Kirchhoff's junction rule can be directly confirmed?

points b, c, and dpoints d, e, and f    points f, h, and jpoints a, h, and i

(c)

If the current in the branch with the voltage source is upward and currents in the other two branches are downward, i.e.

I_a = I_i + I_c,

identify which of the following can be true. Select two answers.

I_e = I_h − I_i

I_d = I_h − I_j

I_c = I_j − I_a

I_i = I_j − I_f

(d)

The measurements reveal that the current through R₁ is 0.50 A and R₃ is 0.60 A. Based on your knowledge of Kirchhoff's laws, confirm which of the following statements are true.

Both the measured currents are correct.The measured current for R₁ is correct but for R₃ is incorrect.    Both the measured currents are incorrect.The measured current for R₃ is correct but for R₁ is incorrect.

(e)

The graph shown in the following figure is the energy dissipated at R₁ as a function of time.

Which of the following shows the graph for energy dissipated at R₂ as a function of time?

Answer 1