An electrical appliance has a resistance of 40 Ω. When this electrical appliance is connected to a 220 V supply line, the current passing through it will be: a) 6.5 A b) 5.5 A c) 8000A d) 0.18A
An electrical appliance has a resistance of 40 Ω. When this electrical appliance is connected to a 220 V supply line, the current passing through it will be: a) 6.5 A b) 5.5 A c) 8000A d) 0.18A
Answer:
b) 5.5 A
Explanation:
Use Ohm’s Law to solve for I:
I=V/R
V is voltage and R is resistance
V=220V
R= 40 Ω
I=220V/40Ω
I= 5.5 Amps