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27 terms

AP Physics Chapter 19

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The potential difference between the terminals of a battery, when no current flows to an external circuit, is referred to as the
emf
The potential difference between the terminals of a battery, when current flows to an external circuit, is referred to as the
terminal voltage
When two or more resistors are connected in series to a battery
All of the given answers :)
When resistors are connected in series,
the current flowing in each is the same.
Three identical resistors are connected in series to a battery. If the current of 12 A flows from the battery, how much current flows thru any one of the resistors?
12 A
Three identical resistors are connected in series to a 12 V battery. What is the voltage across any one of the resistors?
4 V
You obtain a 100 W light bulb and a 50 W bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?
The 50 W bulb glows more brightly that the 100 W bulb.
As more resistors are added in series to a constant voltage source, the power supplied by the source
decreases.
When two or more resistors are connected in parallel to a battery,
all of the given answers.
When resistors are connected in parallel, we can be certain that
the potential difference across each is the same.
Three identical resistors are connected in parallel to a 12 V battery. What is the voltage of any on eof the resistors?
12 V
Three identical resistors are connected in parallel ti a 12 V battery. If the current of 12 V flows from the battery, how much current flows thru any one of the resistors?
4 A
The lamps in a string of Christmas tree lights are connected in parallel. What happens if on lamp burns out?
The brightness of the lamps will not change appreciably.
As more resistor are added in parallel to a constant voltage source, the power supplied by the source
increases.
Consider three identical resistors, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in parallel with these two. What is the maximum power this network can dissipate?
3P/2
Kirchhoff's loop rule is an example of
conservation of energy.
Kirchhoff's junction rule is an example of
conservation of charge.
Which of the equations here is valid for the circuit shown? (Figure 19-1)
-2 - I(sub 1) - 2I(sub 2) =0
If you connect two identical storage batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combo will provide
twice the voltage, and the same current will flow thru each.
If you connect two identical storage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combo will provide
zero volts.
If you connect two identical storage batteries together in parallel and placer them in a circuit, the combo will provide
the same voltage and twice the total charge that one battery would.
When two or more capacitors are connected in series to a battery
all the given answers.
As more and more capacitors are connected in series, the equivalent capacitance of the combo increases.
Never true.
Three identical capacitors are connected in series to a battery. If a total charge of Q flows from the battery, how much charge does each capacitor carry?
Q
When two or more capacitors are connected in parallel to a battery,
the voltage across each capacitor is the same.
As more and more capacitors are connected in parallel, the equivalent capacitance of the combo increases.
Always true.
Three identical capacitors are connected in parallel to a battery. If a tatal charge of Q flows from the battery, how much charge does each capacitor carry?
Q/3