Consider the circuit diagram below.

Which of the following breadboard circuits implements this circuit correctly? 

Notes:

The power supply is set to 5V.

The resistor in the breadboards is 150Ω.

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Given the code shown below

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Correctly identify the scope of all the unique variables shown.

Given the code shown below, map out its execution flow in steps.

What is the result printed by the code shown

a = 7.1

b = 3.6

In the circuit below, v_s = 3 Volts, R₁ = 2Ω, R₂ = 3Ω. Find i in Amps. Give your answer to 3 decimal places.

In the circuit below, i = 4.2 Amps, R₁ = 8.3Ω and R₂ = 9.4Ω. Find V_s in Volts to 2dp.

For the loop picture below, v₁ = 3 V, v₂ = -3 V and v₃ = -4 V. Find v_x in Volts.