power = volt x current
so current = power / volt
current = 100/220 = 0.45 A
this is for pure resistive load with power factor equal 1 such as normal lamp in case of AC (alternaing current )
100w is power, and from power(P) equal to voltage(V) multipied by ampere(A)
Therefore 100=220*A
A=100/220
A=0.4545Ampres
Current is simply the rate of flow of charges whereas voltage can be simply defined as the energy that pushes the charges around a circuit.
Therefore,
V=work/charge=W/q
Hence, W=V×q
I=q/t
Power (P)= rate of work done=W/t=V×q/t=VI
Hence, I=P/V=100/220=5/11
Therefore, the current of that lamp is 5/11 which is approximately 0.45Amps.
#carryonlearning
#hopeitshelp
#homelearning
#science
