Free Printable CIE IGCSE Physics equations (2023 onwards)

1.

What is the equation to calculate speed?

a)

speed = distance/time

b)

speed = time/distance

c)

speed = time x distance

d)

speed = speed/time

2.

The equation for finding average acceleration is

a)

(final velocity - initial velocity) ÷ time

b)

(initial velocity - final velocity) ÷ time

c)

initial velocity + final velocity + time

d)

initial velocity + final velocity - time

3.

The equation for finding acceleration is

a)

$a=\frac{\Delta v}{t}$

b)

$a=\frac{v}{t}$

c)

$a=\frac{\Delta v}{T}$

d)

$a\ =\ v\times t$

4.

What does $\Delta$ mean in an equation

a)

change in

b)

increase in

c)

decrease in

d)

constant value

5.

How are weight, mass and g related

a)

W=mg

b)

m=Wg

c)

g=Wm

d)

W=m/g

6.

What is the equation for density

(tick all that are correct)

a)

$d=\frac{m}{V}$

b)

$\rho=\frac{m}{V}$

c)

$density=\frac{mass}{volume}$

d)

Density = mass x volume

7.

What is the equation for Hooke's Law (tick all correct answers)

a)

F=kx

b)

Force = spring constant x extension

c)

Force = mass x spring constant

d)

F=L x a

8.

Which equation represents Newton's second law

a)

F=ma

b)

F=kx

c)

$a=\frac{\Delta v}{t}$

d)

W=mg

9.

Which equation relates force, acceleration and mass?
Tick all that are correct

a)

F=ma

b)

$F=\frac{m}{a}$

c)

$a=\frac{F}{m}$

d)

a=Fm

10.

What is the equation for moments?

a)

Moment = force x perpendicular distance from pivot

b)

Moment = mass x velocity

c)

Moment = force x distance

d)

Moment = force x parallel distance from pivot

11.

In the exam, is it best to write the equation in words or symbols?

a)

Words - less chance of a mistake

b)

Symbols - less chance of a mistake

12.

When an object is in equilibrium, which equation is true?

a)

Clockwise moment = anticlockwise moment

b)

Clockwise moment + anticlockwise moment = 0

c)

Clockwise moment / anticlockwise moment = 0

d)

Clockwise moment + anticlockwise moment = resultant force

13.

Equation for momentum

a)

Momentum = mass x velocity

b)

Momentum = mass + velocity

c)

$Momentum\ =\ \frac{mass}{velocity}$

d)

Velocituy = momentum x velocity

14.

Symbol equation for momentum

a)

$p=mv$

b)

$p=\frac{m}{v}$

c)

$p=\frac{v}{m}$

d)

$M=mv$

15.

What is impulse

a)

Force x time

b)

Force x acceleration

c)

Force x velocity

d)

Force x mass

16.

Equation for impulse

a)

$Ft=mv-mu$

b)

$Ft=mv+mu$

c)

$Ft=\frac{mv}{mu}$

d)

$Ft=mu-mv$

17.

Equation for kinetic energy

a)

$Kinetic\ energy\ =\ \frac{1}{2}mv^2$

b)

$Kinetic\ energy\ =\ \frac{1}{2}mv^3$

c)

$Kinetic\ energy\ =\ \frac{1}{2}mv^{ }$

d)

$Kinetic\ energy\ =\ mv^2$

18.

Equation for gravitational potential energy (GPE)

a)

$GPE\ =\ m\times g\times\Delta h$

b)

$GPE\ =\ m\times\Delta g\times h$

c)

$GPE\ =\Delta m\ \times g\times h$

d)

$GPE=F\times g\times h$

19.

The law of conservation of momentum can be written as

a)

Momentum before = momentum after

b)

Momentum before > momentum after

c)

Momentum before < momentum after

d)

Momentum before x momentum after = 0

20.

Link between force, work done and distance

a)

work done = force x distance

b)

work done = distance / force

c)

work done = force / distance

d)

work done = force x work

e)

work done = force / work

21.

Link between energy transferred and work done

a)

energy transferred = work done

b)

energy transferrred = 1/2 work done

c)

energy transferred = work done2

d)

energy transferred = 1 / work done

e)

energy transferred = 4/3 π x work done³

22.

Efficiency equation

a)

efficiency = useful output / total input

b)

efficiency = total output / total input

c)

efficiency = total input / total output

d)

efficiency = total input / useful output

e)

efficiency = useful output / useful input

23.

Link between pressure difference, height, gravitational fienld strenght (g) and density

a)

pressure difference = density x g x height

b)

pressure difference = density x g / height

c)

pressure difference = density x height / g

d)

pressure difference = g x height / density

e)

pressure difference = height / g x density

24.

One possible equation for efficiency is

a)

$efficiency=\frac{useful\ power\ output}{total\ power\ input}\times100\%$

b)

$efficiency=\frac{useful\ power\ output}{total\ power\ input}\div100\%$

c)

$efficiency=\frac{total\ power\ input}{total\ energy\ input}\times100\%$

d)

$efficiency=\frac{useful\ energy\ output}{total\ power\ input}\times100\%$

25.

Equation linking force, work done and distance moved

a)

$W=Fd$

b)

$W=\frac{F}{d}$

c)

$F=Wd$

d)

$d=Fw$

26.

Equation for power
Tick all that are correct

a)

$Power\ =\ \frac{energy\ transferred}{time\ }$

b)

Power = energy transferred x time

c)

$P=\frac{\Delta E}{t}$

d)

$P\ =\ \Delta E\ \times\ t$

27.

What is the equation used to calculate pressure?

a)

pressure= force/mass

b)

pressure =mass/volume

c)

pressure=area/force

d)

pressure=force/area

28.

What is the symbol equation for pressure beneath a liquid surface? (careful!)

a)

$p=\rho gh$

b)

$p=\frac{\rho}{gh}$

c)

$\rho=pgh$

d)

$\rho=\frac{p}{gh}$

29.

Which of the following is correct?

a)

pV = constant

b)

$\frac{p}{V}=$ constant

c)

pV = T

d)

pV = $\frac{F}{A}$

30.

A gas undergoes a change. How are the pressure and volume related before and after this change?

a)

$p_1V_1=p_2V_2$

b)

$p_1V_2=p_1V_2$

c)

$p_1V_1=\frac{p_2}{V_2}$

d)

$p_1V_1=0$

31.

What is the formula to calculate heat energy required to raise the temperature of any substance?

a)

E=mc∆t

b)

E=mc

c)

E= ½mv

d)

m=EC

32.

Equation for latent heat

a)

$Energy\ =\ ml$

b)

$Energy\ =\ \frac{m}{l}$

c)

$Energy\ =\ mc\Delta T$

d)

$Energy\ =\ \frac{mc}{\Delta T}$

33.

What is the wave equation?

a)

Wave speed = frequency x wavelength

b)

Wave speed = frequency / wavelength

c)

Frequency = wave speed x wavelength

d)

Frequency = wavelength / wave speed

34.

How do you find the wave speed?

a)

$v=f\lambda$

b)

$v=\frac{\lambda}{f}$

c)

$v=f+\lambda^2$

d)

$v=fT$

35.

Equation for refractive index?

a)

$n=\frac{\sin i}{\sin r}$

b)

$n=\sin i\times\sin r$

c)

$n=\frac{\cos i}{\cos r}$

d)

$n=\cos i\times\cos r$

36.

How are critical angle and refractive index related?

a)

$n=\frac{1}{\sin c}$

b)

$n=\sin c$

c)

$n=\frac{\sin i}{\sin r}$

d)

$c=\frac{1}{\sin n}$

37.

What is a formula to calculate Charge

a)

Q=It

b)

$Q=\frac{I}{t}$

c)

Q=VE

d)

Q=IR

38.

You need to know that 1V=1J/C. Which equation tells you this?

a)

$V=\frac{E}{Q}$

b)

$E=\frac{Q}{V}$

c)

Q=EV

d)

V=EQ

39.

How are resistance, voltage and current related?

a)

V = IR

b)

$R=\frac{I}{V}$

c)

$V=\frac{I}{R}$

d)

R=IV

40.

How do you calculate electrical power?

a)

Power = current x voltage

b)

$Power=\frac{current}{votlage}$

c)

Power = energy x time

d)

Power = resistance x time

41.

How do you calculate the energy transferred in a component?

a)

E=IVt

b)

$E=\frac{t}{IV}$

c)

E=IV

d)

E=Q/t

42.

Three resistors (R₁,R₂,R₃) are connected in series. What is the combined resistance?

a)

R_T = R₁+ R₂ + R₃

b)

R_T = R₁R₂ - R₃

c)

$R_T=\frac{R_1\times R_2}{R_1+R_2}$

d)

$R_T=\frac{R_1+R_2}{R_1\times R_2}$

43.

Two resistors ( $R_1\ \&\ R_2$ ) are connected in parallel with each other. What is their combined resistance?

a)

$R_T=\frac{R_1\times R_2}{R_1+R_2}$ or 1/R_T= 1/R₁ + 1/R₂

b)

$R_T=\frac{R_1+R_2}{R_1\times R_2}$

c)

$R_T=R_1+R_2$

d)

$R_T=\frac{R_1}{R_2}$

44.

Which equation relates number of turns to voltage for a transformer.

a)

$\frac{V_p}{V_s}=\frac{N_p}{N_s}$

b)

$\frac{V_s}{V_p}=\frac{N_p}{N_s}$

c)

$V_pN_p=V_sN_s$

d)

$V_p=N_sV_s$

45.

If a transformer is 100% efficient, how is the power on the two coils related.

a)

Power of primary = power of secondary

b)

Power of primary > power of secondary

c)

Power of primary < power of secondary

d)

Power of primary = 0

46.

What is the equation for current and voltage for a 100% efficient transformer.

a)

$I_pV_p=I_sV_s$

b)

$I_pV_s=I_sV_p$

c)

$\frac{I_p}{V_p}=\frac{I_s}{V_s}$

47.

Equation for Hubble Constant

a)

H₀ = $\frac{v}{d}$

b)

H₀ = v d

c)

H₀ = $\frac{d}{v}$

d)

H₀ = speed time

48.

What represents the approximate age of our Universe?

a)

1/H₀

b)

H₀

c)

H₀ d

d)

H₀ v

49.

Equation for orbital speed:

a)

$v=\frac{2\pi r}{T}$

b)

$v=2\pi rT$

c)

v = time / distance

d)

v = 1/H₀

CIE IGCSE Physics equations (2023 onwards)

Total questions: 49

Worksheet time: 28mins

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