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We have a resistor in series with two other resistors that are parallel to each other
Loop rule for a resistor
Combining Kirchhoff's equations
Example 2
Direction of currents in circuit
Loop 2
Now let's calculate the potential everywhere
The current flowing through every branch of the circuit
Combining equations
Conclusion
Intro
Finding the current in the circuit
Calculating the current flowing through the 10 ohm resistor
Calculating the potential at D
The total power consumed by the circuit
How to find the equivalent resistance without a calculator
How to find the voltage across a resistor
How to calculate the current through each branch
Correcting the current
Calculating power absorbed by each resistor
Practice Problem
What is the current flowing in this circuit?
Voltage drop across each resistor
What is the voltage across R2?
Kirchhoff's Voltage Law
Current in Parallel Circuit
Current flowing through each resistor
As resistance increases, current decreases
What is the current that leaves the battery?
Conclusion
Kirchhoff's Voltage Law
Current flows from a high potential to a low potential
Practice Problems
What is the electric potential at point a, b, and c
To calculate the potential at point B
Current flows from the negative terminal to the positive terminal
Calculate the voltage drop
Determine the direction of the current
Which device will increase the energy of the circuit
Conclusion