1. Tutorial 1 Question 1 If a given resistor in the lab has the following colours bands from left to right, what is its value? ( Yellow, Purple, Red, Gold) Answer = 4700 Ohms 5%

2. Question 2 If a given resistor has a brown band to indicate its tolerance, what does that signify? Answer = 1% Tolerance

3. Question 3 Given that the circuit in the figure below is valid, which sources are absorbing power? How much power in total is being absorbed in the above circuit in the previous question? Answer = The 10V and 50V sources Answer = 300W

4. Question 4 In the series circuit shown in the figure above, 1.what is the value of the current i 5, 2.what is the voltage, v 5 3.what is the value of the voltage v 2 4.what is the total power dissipation 1.Answer = 24/12 = 2A 2.Answer = 2x7 = 14V 3.Answer = 2x3 = 6V 4.Answer = 24x2 = 48W

5. Question 5 In the voltage divider circuit above, 1.what is the voltage, v o 2.what is the power dissipated in the 100kW resistor R 2 1.Answer = 100(100/125) = 80V 2.Answer = V 2 /R = 6400/1e5 = 64mW

6. Question 6 For the current divider circuit above, 1.State the current, i o 2.State the power generated by the 10A current source 1.Answer = 10(16/20) = 8A 2.Answer = -320W

7. Question 7 For the circuit above. 1.Determining the total equivalent resistance 2.calculate the current i a 3.calculate the current, i b 4.calculate the voltage, v o 1.Answer = 4+20||80 = 20 Ω 2.Answer = 2.5(80/100) = 2A 3.Answer = 2.5(20/100) = 0.5A 4.Answer = 2.5(20/100) = 0.5A

8. Question 8 For the parallel circuit above 1.what is the voltage across the current source 2.what is the current flowing through the 30W resistor 1.Answer = 4x30 = 120V 2.Answer = 120/30 = 4A

9. Question 9 In the Wheatstone bridge circuit above, R 1 = 1000 Ω, R 2 = 2000 Ω, R 3 is adjusted so that the voltmeter reads 0V (i.e. the bridge is "balanced"), at this point R 3 = 2000 Ω. Given this information state the value of R x Answer = R 2 xR 3 /R 1 = 4000 Ω

10. Question 10 This question relates to source transformations. The circuit above contains an independent voltage source and three resistors. By making a series of source transformations, or otherwise, 1.determine the Thévenin equivalent voltage and resistance. 2.determine the Norton equivalent current and resistance 1.Voltage = 48VResistance = 16 Ω 2.Current = 3AResistance = 16 Ω