Electric Circuits Answers

How to choose direction of a moment? And how to calculate moment in equilibrium?

How to calculate error estimate in given data table?

What is the name of the zigzag resultant?

Calculate the electric flux (in units Nm2/C) through an area A= 24 i + 3.2 j m2 in measured in an electric field given by E= 5i+3j N/C?

What is a retentivity of a ferromagnetic material means?

A. The amount of magnetic field strength to saturate the ferromagnetic material
B. The ability of a material to retain its magnetism for a long period of time

Is the reactance of a capacitor infinite in DC circuit?

A resistive position transducer with a resistance of 5000 and a shaft stroke of 5.0 in. is used in the arrangement of Fig. (4). Potentiometer R 3 R 4 is also 5000, and V T = 5.0 V. The initial position to be used as a reference point is such that R 1 =R 2 (i.e.. the shaft is at midstroke). At the start of the test, potentiometer R 3 R 4 is adjusted so that the bridge is balanced (V E =0). Assuming that the object being monitored will move a maximum distance of 0.5 in. toward A, what will the new value of V E be?

A generator connected to an RLC circuit has an rms voltage of 150 V and an rms current of 38 mA .
If the resistance in the circuit is 3.1 kΩ and the capacitive reactance is 6.8 kΩ , what is the inductive reactance of the circuit?
Express your answers using two significant figures. Enter your answers numerically separated by a comma.
(more than one answer)
answer in units of kΩ.

A Light-Dimmer Circuit The intensity of a lightbulb with a resistance of 160 Ω is controlled by connecting it in series with an inductor whose inductance can be varied from L=0 to L=Lmax. This "light dimmer" circuit is connected to an ac generator with a frequency of 60.0 Hz and an rms voltage of 120 V .
The inductor is now adjusted so that L=Lmax. In this case, the average power dissipated in the lightbulb is one-fourth the value found in part A. What is the value of Lmax?
ANSWER IN UNITS OF H.