- #1
B3NR4Y
Gold Member
- 170
- 8
Homework Statement
The circuit in operates at 60 Hz with Emax = 170 V, and R = 4.5Ω .
How much energy is dissipated in the resistor in 0.75 s?
Homework Equations
P = VI
For a circuit like mine with only a power source and resistor, the current and voltage are in phase, so
V = E max sin (ωt)
and
[tex] I = \frac{E_{max} sin(\omega*t)}{R} [/tex]
The Attempt at a Solution
Since I want to know the power dissipated over time, I took an integral [tex] V_{0} I_{0} \int_{0}^{t} sin(\omega t) dt [/tex]
this should give me the total energy dissipated at time t, it doesn't, and I am not sure why.