Question

сила тока в телеграфном проводе 7 мА. Какаво напряжение на концах этого провода, если его сопротивление равно 5,6 Ом?​

Answer 1

Ответ: 39,2мВ

Объяснение:

Дано:

I=7мА

R=5,6 Ом

---------------

U-?

U=IR=7*5,6=39,2мВ

Answer 2

Calculating Voltage in a Telegraph Wire

To calculate the voltage at the ends of the telegraph wire, we can use Ohm's law, which states that the voltage (V) is equal to the current (I) multiplied by the resistance (R). The formula is:

V = I * R

Given: - Current (I) = 7 mA = 0.007 A - Resistance (R) = 5.6 Ω

We can use the given values to calculate the voltage at the ends of the telegraph wire.

Using Ohm's law: V = I * R V = 0.007 A * 5.6 Ω V = 0.0392 V

So, the voltage at the ends of the telegraph wire is 0.0392 volts.