CHAPTER 10

Question 1

KIRCHOFF’S SECOND LAW

Answer 1

in a closed loop of an electrical circuit, the sum of e.m.f.s is equal to the sum of the p.d.s

Question 2

SERIES CIRCUIT

Answer 2

a type of electrical circuit where the components are connected end-to-end

Question 3

PARALLEL CIRCUIT

Answer 3

a type of branching electrical circuit where there is more than one path of the current- components in parallel have the same potential difference

Question 4

RESISTOR CIRCUIT

Answer 4

two or more resistors arranged to provide a specific resistance

Question 5

INTERNAL RESISTANCE

Answer 5

the resistance of a source of e.m.f due to its construction, which causes a loss in energy/ voltage as the charge cases through the source

Question 6

TERMINAL P.D.

Answer 6

the potential difference across an electrical power source- when there os no current this is equal to the e.m.f of the source, but if there is a current in the source this is equal to the e.m.f minus the lost volts

Question 7

LOST VOLTS

Answer 7

the potential difference across the internal resistor of a source e.m.f

Question 8

POTENTIAL DIVIDER

Answer 8

an electrical circuit designed to divide the potential difference across two or more components in order to produce a specific output

Question 9

POTENTIOMETER

Answer 9

an electrical component with three terminals and some form of sliding contact that can be adjusted to vary the potential difference between two of the terminals