All AP Physics 2 Resources
Example Questions
Example Question #171 :Electricity And Magnetism
What is the current flowing through?
Impossible to determine
None of these
,, andare in parallel, so we add them by using:
We find that
,, andare in series. So we use:
First, we need to find the total current of the circuit, we simply use:
Because,andare in parallel,
Also, the voltage drop must be the same across all three
Using
Using algebraic subsitution we get:
Solving for
Example Question #172 :Electricity And Magnetism
What is the current flowing through?
None of these
,, andare in parallel, so we add them by using:
We find that
,, andare in series. So we use:
We will then find the total current of the circuit. This will also be the current ofbecause this resistor is not in parallel with any others.
Example Question #173 :Electricity And Magnetism
What is the current flowing through?
Impossible to determine
None of these
,, andare in parallel, so we add them by using:
We find that
,, andare in series. So we use:
First, we need to find the total current of the circuit, we simply use:
Because,andare in parallel,
Also, the voltage drop must be the same across all three
Using
Using algebraic subsitution we get:
Solving for
Example Question #11 :Circuits
What is the voltage drop across?
None of these
,, andare in parallel, so we add them by using:
We find that
,, andare in series. So we use:
We will then determine the total current of the circuit.
Once again, using
Whereis the resistance of the resistor in question, we get
Example Question #12 :Circuits
What is the voltage drop across?
None of these
,, andare in parallel, so we add them by using:
We find that
,, andare in series. So we use:
First, we need to find the total current of the circuit, we simply use:
Because,andare in parallel,
Also, the voltage drop must be the same across all three
Using
Using algebraic subsitution we get:
Solving for
Using
例子问题# 13:Circuits
The current throughis,has a resistance of. Determine the voltage of the battery.
Due to the "loop rule", the voltage increase in the battery will need to be equal to the voltage drop in the resistor.
Use Ohm's law:
Combine equations:
Plug in values:
Example Question #14 :Circuits
If the battery has a voltage of, andhas a resistance of, determine the current through.
Due to the "loop rule", the voltage increase in the battery will need to be equal to the voltage drop in the resistor.
Use Ohm's law:
Combine equations:
Plug in values:
Example Question #15 :Circuits
Abattery is placed in series with fiveresistors. Find the total resistance.
In series, resistance adds conventionally.
Example Question #16 :Circuits
Abattery is placed in series with fiveresistors. Find the voltage drop across each resistor.
In series, resistance adds conventionally.
Using Ohm's law for total current:
Now use Ohm's law for an individual resistor:
Example Question #17 :Circuits
Abattery is placed in series with fiveresistors. Find the current.
In series, resistance adds conventionally.
Using