Question

How many 132 Ω resistors in parallel are required to carry 5 A on a 220 V line?

Answer 1

Given, V = 220 V, I = 5 A

V = IR

Or R = `"V"/"I"`

In parallel combination, let the no. of resistors be x

`132/x=220/5`

`132/x=44`

x = `132/44`

x = 3

∴ The number of resistors = 3