A current of 0.40 A flows through the conductor, the potential difference at the ends of the conductor is 8.0 V.

A current of 0.40 A flows through the conductor, the potential difference at the ends of the conductor is 8.0 V. What is the resistance of the conductor?

given
current strength = 0.40 A
voltage = 8.0 V
find resistance
decision
according to the formula, the current strength is the voltage divided by the resistance, from here we find what the resistance is, the resistance is calculated then the voltage is divided by the current strength, that is, R = U / I
substituting the known values, we find what is the resistance, that is, we get
R = U / I = 8 V / 0. 4 A = 8 * 10 / (0.4/10) = 80 / (0.4 * 10) = 80/4 = 20 * 4/4
the numerator and denominator in the fraction are reduced by 4, then
R = 20 * 1/1 = 20 Ohm
answer: 20 ohm