A circuit contains only a(n) 0.179 H inductor. An AC voltage of peak value 176 V andfrequency 61.9 Hz is applied to the circuit.When the instantaneous voltage is 176 V,what is the instantaneous AC current?Answer in units of A
The phrase 'a(n) 0.179 H inductor' implies a practical electrical component. Such a thing will inevitably have some resistance, and in order to solve the problem we need to know what this resistance is. Since we are told nothing about it we cannot solve the problem. However, if we understand this to be a theoretical problem, and understand the first sentence to mean 'A circuit contains only inductance of 0.179 H' and if we make the further assumption that the applied voltage is sinusoidal, we can say that the current will be zero at the instant that the voltage is at its peak value. This is because the voltage and current will be 90deg out of phase in a purely inductive circuit, or in relation to a pure inductance. Note that I have had to re-phrase the question, and make an assumption about the nature of the applied voltage in order to answer the question. My answer should not be taken as the correct answer to the problem as stated. That problem is insoluble.
