Three friends are arguing with each other. Aidan says that a battery will send t
ID: 1534723 • Letter: T
Question
Three friends are arguing with each other. Aidan says that a battery will send the same current to any circuit you connect to it. Cathy says that the battery will produce the same potential difference at its terminals independent of the circuit connected to it. Eugenia says that the battery will always produce the same electric power independent of the circuit connected to it. The following examples convince all of them that their opinions are wrong in at least one situation.
Part A
Due to the internal resistance of the battery, r, the terminal voltage is given by Vbatt=IR=Ir. For whom this example was intended? Due to the internal resistance of the battery, , the terminal voltage is given by . For whom this example was intended?
a) for Aidan
b) for Cathy
c) for Eugenia
Part B
You have two resistors (with R1>R2). Connect each separately to the same battery. For whom this example was intended?
a) for Aidan
b) for Cathy
c) for Eugenia
Part C
The power produced by the battery is, ignoring internal resistance of the battery, P=I(V)=(V)^2/R. For whom this example was intended?
a) for Aidan
b) for Cathy
c) for Eugenia
Explanation / Answer
A) this argument is given for cathy
B) this argument is given for aidan
C) this argument is given for eugenia