Question

4. The current in an RL circuit increases to 95% of its final value 3 seconds after the switch is closed. The inductance in the circuit is 0.310 H. Find the inductive time constant and resistance for the circuit. (Assume the inductor has neglible resistance). Show your work.

5. At resonance, the reactance of the inductor (L) and the capacitor (C) cancel each other so that the impedance (Z) is just the resistance (R). Using the values from this experiment and Ohm's law (V = IR, calculate the resistance of the circuit by using the amplitide of the current atresonance and where V is the amplitude ofthe applied voltage. Is this resistance equal to 10 (Ohmns)? If not, what physical experimental uncertainties could have produced the discrepancy? Show your work.

6.During a lab experiment, a straight piece of copper wireis connected across the terminals of an AC generator and the current throught the wire was measured. If the wire is removed and a part of it is tightly wound into a loop of many coils and the wire is then reconnected to the generator, will themeasured current throught the wire, be greater, lesser, or the same as it was before the wire was coiled? Explain your answer.

7. What is the circuit impedance (Z) of a 1.5 K(ohms) resistor, a 155 mH inductor and a 12.5 uF capacitor connected in seies with a 60 Hz AC generator?


HELP! This is due tomorrow.

Answer 1

as per guidelines iam working problem 4