Question

how many 440 ohm resistance in parallel are required to carry 5 ampere current into 220 volt line

Answer 1

I = 5 A
V = 220 V
Ohm's law, V = IR
                220 = 5R
                    R = 44 Ω
In parallel connection, $R_{eq} =R/n$ if there are n resistors each of resistance R.
                440 = 44n
               ⇒ n = 10

Answer 2

Given:-

Current, I = 5 Ampere

Potential difference, V = 220 volts.

Resistance = ?

According to ohm's law,

⇒ V = I×R

⇒ 220 = 5×R

⇒ R = 220/5

⇒ R =

Now, let the no. of the resistor 'n' , and each resistance 'R'

⇒No. of resistor, 'n' = 440 / 44 Ω

⇒No. of resistor, 'n' = 10

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