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OCR 2024 GCSE (9–1) Physics B (Twenty First Century Science) J259/02 Depth in physics (Foundation Tier) Question Paper and mark scheme merged$7.99
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P1 Radiation and waves
wave speed = frequency × wavelength
P2 Sustainable energy
energy transferred = power × time E = Pt
useful energy transferred
efficiency =
total energy transferred
P3 Electric circuits
J259 01/02/03/04
charge = current × time
2
potential difference = current × resistance
work done (energy transferred) W
V=
potential difference = charge Q
energy transferred E
P=
power = time t
energy transferred (work done) = charge × potential difference
power = potential difference × current
power = (current)2 × resistance P = I2 R
HT force = magnetic flux density × current × length of conductor
potential difference across primary coil × current in primary coil = potential difference across secondary coil × current in secondary coil Vp Ip = Vs Is
HT potential difference across primary coil number of turns in primary coil Vp Np
=
= V N
potential difference across secondary coil number of turns in secondary coil
P6 Matter – models and explanations
mass
density =
volume V
change in internal energy = mass × specific heat capacity × change in temperature
energy to cause a change of state = mass × specific latent heat E = ml
force exerted by a spring = spring constant × extension F = kx
1 1
energy stored in a stretched spring = × spring constant × (extension)2 E = kx 2
2 2
force normal to a surface F
pressure = p=
area of that surface A
for a given mass of gas at a constant temperature:
p V = constant
J259 01/02/03/04
pressure × volume = constant
4
HT pressure = density × gravitational field strength × depth p = ρ gh
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