Unit 2 Equations

Question 1

What is the equation for velocity?

Answer 1

V=fλ

Velocity = frequency × wavelength
(m/s) (Hz) (m)

Question 2

What is the equation for charge?

Answer 2

Q =IT

Charge = Current × time
(coulombs) (amperes) (s)
(C) (A)

Question 3

What is the equation for voltage?

Answer 3

V =IR

Voltage = Current × Resistance
(V) (A) (Ω)

Question 4

What is the equation for energy?

Answer 4

E = PT

Energy = Power × Time
(Joules) (Watts) (s)
(J) ( W)

Question 5

What is the equation for power (not E=PT)

Answer 5

P = IV

Power = Current × Voltage
(W) (A) (V)

Question 6

What is the equation for frequency? (Not F=V/λ)

Answer 6

Frequency= no. of waves/ time
(Hz) (s)

Question 7

What is the equation for speed?

Answer 7

S= D/T

Speed = distance/time

m/s metres s