A 45-mH inductor is connected to an ac source of emf with a frequency of 250 Hz and a maximum emf of 20 V. If the voltage across the inductor is +20 V at time t = 0, what is the voltage at time t = 2.0 ms? Assume the phase constant is zero.

The the voltage at time (t) = 2.0 ms is equal to -20 Volts.

Given the following data:

To determine the the voltage at time (t) = 2.0 ms:

In an AC source, the voltage across the inductor is given by the formula:

When time (t) = 2.0 ms:

Voltage = -20 Volts.

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-20v

Explanation:

Data provided in the question as per the given situation

L = 45 mH

f = 250 Hz

V_o = 20V

Based on the above information, let us assume voltage across inductor be V at t

So,

t = 2 ms

Now

The voltage at time t = 2.0 ms is

= -20 volt

= -20v

We simply solved the above equation so that the correct voltage could come

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right