Charge, Power And Energy (T2)

Question 1

How would you calculate charge?

Answer 1

Q = I x t

Q = charge in coulombs
I = current in amps
t = time in seconds

Question 2

How would you calculate power?

Answer 2

P = I x V

P = power in watts
I = current in amps
V = voltage

Question 3

How would you calculate energy?

Answer 3

W = V x Q

Or..

W = P x t

W = energy in joules
P = power in watts
t = time in seconds
V = potential difference
Q = Charge in coulombs

Question 4

Explain Coulomb’s Law..

Answer 4

A law stating that like charges repel and opposite charges attract, with a force proportional to the product of the charges and inversely proportional to the square of the distance between them.

Question 5

One coulomb of charge is equal to the charge carried by approximately how many electrons?

Answer 5

Six million, million, million electrons

6 x 10 to the 18th