Question

30 баллов Сопротивление проводника равно 0,007 КОм. Чему равно напряжение на концах проводника, если за 342 с через его поперечное сечение проходит заряд 21546 Кл?

Answer 1

Следствие из закона Ома:
$U = IR$
Сила тока:
$I = \frac{q}{t}$
Тогда напряжение:
$U = R \frac{q}{t}$
U = 0.007 кОм * (21546 Кл) / 342с = 7 Ом * 63 Кл/с = 441 А * Ом = 441В.

Answer 2

Calculation of Voltage across the Conductor

To calculate the voltage across a conductor, we can use Ohm's Law, which states that the voltage (V) across a conductor is equal to the product of the current (I) flowing through it and the resistance (R) of the conductor. Mathematically, it can be expressed as:

V = I * R

In this case, we are given the resistance of the conductor as 0.007 KΩ (kiloohms) and the charge passing through it as 21546 Koulombs. However, we need to find the current flowing through the conductor to calculate the voltage.

Calculation of Current

To calculate the current, we can use the formula:

I = Q / t

where I is the current, Q is the charge passing through the conductor, and t is the time taken for the charge to pass through the conductor.

In this case, we are given the charge as 21546 Koulombs and the time as 342 seconds. Substituting these values into the formula, we can calculate the current.

I = 21546 Koulombs / 342 seconds

Calculating this, we find that the current flowing through the conductor is approximately 63.07 Amperes.

Calculation of Voltage

Now that we have the current and resistance, we can calculate the voltage across the conductor using Ohm's Law.

V = I * R

Substituting the values, we get:

V = 63.07 Amperes * 0.007 KΩ

Calculating this, we find that the voltage across the conductor is approximately 0.441 KVolts (kilovolts).

Therefore, the voltage across the conductor is approximately 0.441 KVolts when a charge of 21546 Koulombs passes through it in 342 seconds.

Please note that the calculations provided are based on the information given in the question.