Question

How many 176 ohm resistors are required to carry 5A on 220V line

Answer 1

Voltage= 220V
Current = 5A

R=V/I
Therefore, R = V/I = 220/5 = 44ohm

Resistance= 44ohm
Resistance of 44ohm is required

If our resisters are in parellel

we know resistance in parallel
if we have same resistors is
R = R'/n
where n is number of resistor used

Here R'= 176ohm and R is 44 ohm

n= R'/R = 176/44= 4
Number of resistors used = 4