Question

How many 176ohm resistor in parllal are required to carry 5ampere on a 220volt line?

Answer 1

First, let's calculate resistance in the line

V = I R

220 = 5 R

R = 44Ω

Now if 'n' resistors of resistance 176 Ω are in parallel, the equivalent should be 44Ω.

176/n = 44

n = 176/44 = 4

Therefore 4 resistors of resistance 176 Ω are required.