chapters 1

Question 1

Charge

Answer 1

is the basic quantity responsible for electric phenomena.
The symbol for charge is q(t). The unit of charge is the coulomb
(C).

Question 2

Current

Answer 2

t is the time rate of flow of electric charge past a given
point. Generally current varies with time and is denoted by i(t).
Its unit is the ampere (A) which is equivalent to 1 coulomb/sec.

Question 3

how are current and charge related

Answer 3

current is the derivative of charge and charge is the integral of current.

Question 4

I sub(ab)

Answer 4

current goes from a to b

Question 5

Given q(t) = 10 t for t ≥ 0, find i(t)

Answer 5

derive the equation for charge

solve for I

Question 6

Given i(t) = 10 e–2t for t ≥ 0, and q(0) = 0. Find q(t).

Answer 6

integrate to find the equation for q(t)

definite integral using q(0) = 0

Question 7

Voltage

Answer 7

s the difference in potential between two terminals.

Question 8

how are energy and charge related

Answer 8

the derivative of energy (w) with respect to charge(q) is charge/ the integral of charge is energy

Question 9

how are power and energy related

Answer 9

Power is the derivative of energy(w) with respect to time

the integral of energy is charge

Question 10

P equations

Answer 10

VI or ri^2 or V^2/r