Question

Напряжение на концах проводника 42 В, а сила тока в нем 200 мА. Чему равно сопротивление проводника? Ответ запишите в омах (Ом).

Answer 1

1) Переведём в СИ:

200 мА = 0.2 А

2) Воспользуемся законом Ома:

I = U/R

3) Выразим отсюда сопротивление:

R = U/I

4) Подставим значения, данные в условии:

R = 42/0.2 = 42 * 5 = 210 Ом

Ответ: 210 Ом.

Answer 2

Calculation of Resistance

To calculate the resistance of a conductor, we can use Ohm's Law, which states that the resistance (R) is equal to the voltage (V) divided by the current (I). In this case, the voltage is given as 42 V and the current is given as 200 mA (or 0.2 A).

Using the formula R = V / I, we can substitute the given values:

R = 42 V / 0.2 A

Calculating this expression, we find that the resistance of the conductor is 210 ohms.

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