Explain the time constant of the circuit, Macroeconomics

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A coil of inductance 0.04H and resistance 10Ω is linked to a 120V, d.c. supply. Determine

(a) The ?nal value of current,

(b) The time constant of the circuit,

(c) The value of current after a time equal to the time constant from the instant the supply voltage is connected,

(d) The expected time for the current to rise to within 1% of its ?nal value.

 


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