Question

Лампочка соединена с конденсатором емкостью 1мФ. Определите начальное напряжение на конденсаторе, если за 2 с через потребитель прошёл ток 20мА.

Answer 1

Calculation of Initial Voltage on the Capacitor

To determine the initial voltage on the capacitor, we can use the formula:

V = Q / C

Where: - V is the voltage on the capacitor, - Q is the charge stored on the capacitor, - C is the capacitance of the capacitor.

In this case, we are given that the capacitance of the capacitor is 1mF (millifarads) and the current passing through the load is 20mA (milliamperes) for a duration of 2 seconds.

To find the charge stored on the capacitor, we can use the formula:

Q = I * t

Where: - I is the current passing through the load, - t is the time duration.

Substituting the given values, we have:

Q = 20mA * 2s = 40mC

Now, we can calculate the initial voltage on the capacitor:

V = Q / C = 40mC / 1mF = 40V

Therefore, the initial voltage on the capacitor is 40V.

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