Electrical circuits Flashcards
1
Q
Kirchoffs first law
A
Sum of currents entering a junction equals to sum of currents leaving a junction.
2
Q
kirchoffs second law
A
In a closed loop, sum of emf is equal to pd
3
Q
series circuit resistance rules
A
total resistance in a circuit equals to sum of resistance of each resistor
4
Q
parallel circuits resistance rules
A
1/R=1/R1+1/R2+1/R3
5
Q
potential divider
A
uses two resistors in series to split or divide the voltage of the supply in a chosen ratio so that the chosen voltage can be provided to another device
6
Q
terminal pd
A
pd aross the terminals of a cell. Difference in emf and pd is the lost volts
