Do you expect the theoretical or the experimental resistance of a circuit to be
ID: 1433097 • Letter: D
Question
Do you expect the theoretical or the experimental resistance of a circuit to be higher? Why? Is the resistance of the wires and the contacts more significant in a series circuit or a parallel circuit, or neither? In what form is the electric energy expended in the resistors in these circuits? In any series circuit, which resistor would consume the most power? In any parallel circuit, which resistor would consume the most power? If the resistors in this experiment are rated at 1/2 watt, what does that mean? Calculate the power dissipated in each resistor in each of the five circuits, Which resistor in which of the five circuits consumed the most power? Which resistor in which of the five circuits consumed the least power?Explanation / Answer
1. Experimenta resistance of the circuit is higher than theoritical resistance, while measuring the resistance with the help of electrical devices their resistance can also add.
2. Resistance of the wires and the contats more significant in series circuit than parallel circuit, if the resistance of wires in series addded to the circuit resistance leads to
more reisistance in the circuit in parallel ciruit that not much significant as that of series circuit.
3.Electrical energy will be expended at the resistors in ciruit is in the form of heat energy (joule heating)
4. power dissipation or more power consumption is due to large resistance so the resistor having high resistance will consume most power in series circuit
5. In parallel circuit the power consumption or power dissipation is P = v^2/R , as we know that in paralle circuit all the resistors are at same potential so less resistors consumes more power.
power dissipation P = v^2/r = V*I
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