L9 - electrical circuits

Question 1

what are the two types of electricity?

Answer 1

static (not moving) and current (moving).

Question 2

what is an electric current?

Answer 2

a flow of charged particles.

Question 3

what is current?

Answer 3

a flow of electrons (negative charge).

Question 4

rearrange Q=I x t
(charge flow = current x time)

Answer 4

I=Q/t
t=Q/I

Question 5

what is the measurement of charge flow?

Answer 5

coulombs (C).

Question 6

resistor, variable resitor, fuse and thermistor, LDR.

Answer 6

resistor=box with line on sides.
variable resistor= resistor with arrow diagonal.
fuse = resistor with line going through.
thermistor=resistor with shirt line then goes diagonally up.
LDR=resistor with circle around and 2 arrows parallel pointing in.

Question 7

diode, LED

Answer 7

diode=play button with line in circle with line going through.
LED=diode with parallel arrows facing outwards.

Question 8

what does the cell store and where does it transfer it to?

Answer 8

chemical energy, charge carries when a circuit is connected.

Question 9

when electrons pass through the battery, what do they gain and what is raised?

Answer 9

energy as their ‘potential’ is raised.

Question 10

resistance measurement?

Answer 10

ohms (Ω).

Question 11

rearrange V=IR
(potential difference = current x resistance)

Answer 11

I=V/R
R=V/I