dc circuits

Question 1

junction

Answer 1

a point where atleast 3 circuit paths meet

Question 2

branch

Answer 2

path connecting 2 junctions

Question 3

kirchoffs first law

Answer 3

at any junction in a circuit the total current leaving the junction is equal to the total current entering the junction

Question 4

kirchoffs second law

Answer 4

total emf in a loop is the total electrical energy charge per coulumb produced in the loop and the sum of the potential drops is the electrical energy per couloumb delivered round the loop

Question 5

emf

Answer 5

electrical energy per unit of charge produced by the source

Question 6

internal resistance

Answer 6

loss of pd per unit current in the source when current passes through the source

Question 7

potential divider

Answer 7

circuit with 2 resistors in series to each other and a source of fixed pd
- it can supply pd
- supply a variable pd
-supply a pd that varies with physical condition