Question

Consider the following series circuit with a 105 volt battery and three resistors; R1=4 ohm, R2=5 ohm, and R3=6 ohm a) Will the current in this circuit flow clockwise or counterclockwise? Explain your reasoning in three lines or less. b) What is the equivalent resistance of the three resistors above wired in series, in ohms? c) Draw the equivalent simple circuit. d) Find the current in the equivalent simple circuit, in amps. e) What is the current in the original circuit, in amps? f) Find the voltage drop (loss) across the resistor R3 in volts. g) Find the power dissipated in the resistor R3 in watts. h) Find the power generated by the battery in watts. i) Assume the actual current which is measured in this circuit is considerably smaller than our prediction in part e) above. Give some possible explanation for this. j) Assume the three resistors are lamps and that lamp R3 goes bad and stops glowing. What would happen to lamp R1? Explain your reasoning. What is such a circuit called? k) In what real-life situation are lamps wired as in the circuit above? l) Which lamp will be the least bright? Explain your reasoning. m)All the lamps in the above circuit are dim. Explain in four lines or less why this is so.

Answer 1