A resistor has a resistance of 176 ohms. How many of these resistors should be connected in parallel so that their combination draws a current of 5 ampere from a 220 volt supply volt line?

I = 5 amp V = 220 V

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

The resultant resistance must be less than 176 ohm. Therefore, the resistors are connected in parallel Let the required no be n

Rre = 176/n = 44 N = 176/44 = 4