engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Electromagnetic Oscillations and Alternating Current Alternating Current
In an A.C. circuit the emf (e) and the current (i) at any instant are given respectively by :
e = E0 sin ωt
i = I0 sin (ωt – φ)
The average power in the circuit over one cycle of A.C. is -
1
\(\dfrac{E_0I_0}{2}\cos \phi\)
2
E0I0
3
\(\dfrac{E_0I_2}{2}\)
4
\(\dfrac{E_0I_0}{2}\sin \phi\)