Question

A cd player has a current of 0.1 a flowing through it. if the source voltage is 4v, what is the resistance? R=V/I

Answer 1

Given parameters:

Current of CD player  = 0.1A

Source Voltage = 4V

Unknown:

Resistance  = ?

Solution:

Based on Ohm's law;

           V  = I R;

  V = voltage

   I = current

   R = resistance

Input the parameters and solve;

          4 = 0.1 x R

              R  = $\frac{4}{0.1}$   = 40ohms

The resistance of the CD player is 40ohms