navjitdosanjh20
15.04.2020 •
Mathematics
An inductor in an electric circuit is essentially a coil of wire in which the voltage is affected by a changing current. Bydefinition, the voltage caused by the changing current is given by VL=L(di/dt), where L is the inductance (in H). If VL=9.0−0.4t for a 3.0-H inductor, find the current in the circuit after 20 s if the initial current was zero.
After 20 s, the current is A.
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Ответ:
Beth gave 40 x (3/8) = $15