Question

How many 160 ohm resistors (in parallel) are required to carry 5A on a 100V line?

Answer 1

Answer:

Explanation:

HERE THE EFFECTIVE RESISTANCE = V/I

                                                             = 100 / 5

                                                             = 20

SINCE ITS A PARALLEL  CONNECTION AND WE USE IDENTICAL RESISTANCE

R/n = effective resistance

n is the number of resistance

R is resistance we are using

n = R / effective resistance

  = 160 / 20

  = 8

thus we want to use 8 resistance