Q3. (a) Assume that the current flowing through a 1 kq resistor is 30 mA. If the current is to be reduced by 40%, what i

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Q3 A Assume That The Current Flowing Through A 1 Kq Resistor Is 30 Ma If The Current Is To Be Reduced By 40 What I 1 (89.62 KiB) Viewed 29 times

Q3. (a) Assume that the current flowing through a 1 kq resistor is 30 mA. If the current is to be reduced by 40%, what is the value of a resistor that must be connected in series to the 1 k resistor? (2 marks) (b) Calculate the percentage drop of the power dissipated in the circuit. (2 marks) (c) Four 12 V voltage sources are connected in series. What is the total voltage of the combination? (1 mark) Q4. The following circuit contains a DC voltage source Vs = 12 V and five resistors: R1 = 100 2, R2 = 2002, R3 = 3000, R4 = 150 , Rs = 250 0. A voltmeter is placed across the resistor R3. R w W R2 R4 Vs } w V2v R3 RS Kaplan International Pathways 2 kaplanpathways.com (a) Calculate the equivalent resistance of the circuit to one decimal place. (2 marks) (b) Calculate the voltage drop V3 across resistor Rs to one decimal place. (2 marks) (c) Calculate the power dissipated by resistor Rs to one decimal place. (1 mark)