The electric fields from three coherent sources are described by E1 E0 sin t, E2 E0 sin (wt ), and E3 E0 sin (wt 2) Let the resultant field be represented by EP ER sin (wt a) Use phasors to find ER and 1 when (a) 20 0, (b) 60 0, and (c) 120 (d) Repeat when (3 2) rad

Question: The electric fields from three coherent sources are described by E1 = E0 sin -t, E2 = E0 sin (wt + ), and E3 =

The electric fields from three coherent sources are described by E1 = E0 sin -t, E2 = E0 sin (wt + ǿ), and E3 = E0 sin (wt + 2ǿ). Let the resultant field be represented by EP = ER sin (wt + a). Use phasors to find ER and 1 when
(a) Ǿ = 20.0°,
(b) Ǿ = 60.0°, and
(c) Ǿ = 120°.
(d) Repeat when ǿ = (3π/2) rad.

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