Induction. For the following, show clearly the direction of the applied B field,

Question

Induction. For the following, show clearly the direction of the applied B field, say whether the flux in increasing or decreasing, show the direction of the induced B field, and the direction of the induced current, all before you circle an answer. For each situation, circle the direction of the induced current through the resistor. motion to left Close switch The following circuit is attached to an AC voltage source with a frequency f=60 Hz, Vms = 120V, R = 25 ohm, L = 5.5mH, C = 35.5 mu F. You should answer all of the below from memory of the relevant equations. find the angular frequency. find the capacitive reactance. find the inductive reactance. find the impedance.

Explanation / Answer

angular frequency

w = 2 pi f = 2 pi ( 60 ) = 376.8 rad/s

(b)

X_C = 1/ wc = 1/ 376.8 rad/s(35.5 * 10 ^-6 F) = 74.75 ohm

(c)

wL =  376.8 rad/s(5.5 * 10 ^-3 H) = 2.072 H

(d)

z = root R^2 +( wL - 1/wC)^2

= root (25)^2 +(2.072 - 74.75)^2 =76.85 ohm

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