electricity

Question 1

current, resistance, pd

Answer 1

V=IR

Question 2

current, time, charge

Answer 2

Q=It

Question 3

pd, power, current

Answer 3

P=IV

Question 4

resistance, power, current

Answer 4

P=I^2 R

Question 5

time, energy, power

Answer 5

P=E/t

Question 6

Mega, kilo, milli, micro (power of 10)

Answer 6

10^6, 10^3, 10^-3, 10^-6

Question 7

RP1(R in Series)=
Ammeter=______
CV=_______&_______
Relationship______

Answer 7

Ammeter= in series
CV= resistors have same value & temp of resistors remain the same
Relationship= Current is inversely proportional to number of resistors

Question 8

RP2(R in Parallel)
Relationship=______
Reason=______

Answer 8

Relationship= adding resistors in parallel will increase current flowing
Reason= more paths for current to flow, decreasing overall circuit resistance

Question 9

RP3(length of wire affecting R)
Ammeter=_____
Voltmeter=______
Relationship=_______
CV=______

Answer 9

Ammeter=in series
Voltmeter= in parallel
Relationship=resistance of wire is directly proportional to its length
CV= temp of wire remains the same

Question 10

RP4(current vs volts)
Ammeter=____
Voltmeter=______
Variable resistor=_____

Answer 10

Ammeter=series
Voltmeter=parallel
Variable resistor=series

Question 11

diagrams for:
Resistor
Filament bulb
Diode

Answer 11

R= ↗️
Filament bulb=⤴️↗️
Diode=⤴️

Question 12

UK mains supply
Pd=
A.c=
Frequency=

Answer 12

Pd= 230 volts a.c
A.c= alternating current
Frequency= 50 Hz

Question 13

Wiring a plug
Live=______
Neutral=______
Earth=_______

Answer 13

Live= Brown (bottom right, 230V)
Neutral=Blue (bottom left, 0V)
Earth= Yellow/green (safety wire, 0V)

Question 14

FUSE=
A ____ piece of wire that will ____ if too large a current flows through the ____ wire. (1A, 3A, 5A, 13A)

Fuses prevent F_R_S

Answer 14

thin, melt, live

Fires

Question 15

EARTHING=
Prevents E___T_O__TI_N if a fault occurs & the ____ wire touches the ____ casing of an appliance.
Possible electric shock/death

Answer 15

Electrocution, live, metal

Question 16

NCOG=
Advantages=
Disadvantage=
Nuclear F__S_ON (induced by a neutron) produces ____ = water➡️steam, turns t__b_ne and g_n_ra__r

Answer 16

Nuclear (uranium & plutonium), coal, oil, gas
ADV= reliable (Nuclear- ❌CO2, large amounts from small amount of fuel)
DISADV= (COG- CO2 produced = global warming, fossil fuels will run out)
DISADV= (N- radioactive waste☢️, u+p will run out)
Fission, heat, turbine, generator

Question 17

WWW.GHST
Adv=
Disadv=

Answer 17

wind, wave, wood, geothermal, hydro, solar, tidal
Adv= renewable, ❌CO2 emitted, 🪵=carbon neutral
Disadv= unreliable, depending on different variables, solar=💰💸

Question 18

National grid
1) P___r St___on
2) Step __ transformer (⬆️pd)
3) Po__r C___es
4) Step ____ transformer (⬆️current)
5) H_m_s (230V a.c)

⬆️pd= less energy to surrounds as ____ = more energy received at h_m_s = transmission is more e__ic_en_

Answer 18

Power station, Up, power cables, down, homes
Heat, homes, efficient