Circuit Laws Flashcards
What is Kirchhoff’s Voltage Law?
the net change in electric potential around a closed loop is zero
What is Kirchhoff’s Current Law?
the net sum of the currents crossing any closed boundary (node) must equal zero
What is Ohm’s Law?
an ideal resistor exhibits a linear i-v relationship (V = IR)
What is the voltage divider rule?
the voltage across a resistor in series is proportional to the ratio of the resistance over the sum of all resistances
What is the current divider rule?
the current through a resistor is proportional to the ratio of reciprocal resistance of the resistor over the sum of reciprocal resistances
When can you combine voltage sources?
When they are in series or the same value in parallel
When can you combine current sources?
When they are in parallel or the same value in series
How do you combine resistors in series?
Add them together
How do you combine resistors in parallel
take the reciprocal of the sum of their reciprocals
