If w(t) = 2t4 Joules, find p(t) for t = 6 seconds.

Given the circuit shown, Calculate the Peak Output Voltage. Express your answers in two decimal places (i.e., 9.946 becomes 9.95, and 7.6 becomes 7.60). 4:1 D1 120 V rms RL 1.0 kN D2 elle lelll

A coil of 100 turns has an inductance of 500 mH. If we pass a current of how many amperes through it, a flux of 2 mb will be produced ?

Activity 1: You are testing an electrical device which can be modelled by the figure shown below: 18 -j12 a b j6 -j10 it E1 12 13 E2 13 The above electric circuit can be characterized by the following equations: 1811 + j6(11 – 12) + 4(11 – 12) = 1020° -j1212 + 8(12 – I3) + 20490° + 4(I2 – 4) + j6(I2 – I1) = 0 -j1013 + 1313 – 20290° + 8(13 – 12) = 0 Find I1, I2, and I3 using the Gaussian elimination method.

The waveforms show a voltage (v) and a current (i) for an AC circuit. The current signal has a value of 0A at t = 25ms, 75ms, and 125ms. The voltage signal reaches a maximum value of 5 volts at t = 83.33ms and 183.33ms. 6 5 4 3 i 1 1. 0.05 0.1 1 0.15 0.2 0.25 0.3 -1 1. -2 -3 -4 -5 -6 a) What is the frequency of the current signal, in Hz? b) What is the angular frequency of the voltage signal, in rad/s? c)What is the phase difference between the current and voltage [5 pts] signals (in degrees)? d)Does the voltage signal LEAD or LAG the current signal?

Inductance

3- Please I want answer of this Electrical Principles question. Thanks

Assuming a 60 hertz system, how much time in seconds is the maximum positive current behind the maximum positive voltage when the current lags the voltage by: 90° 0° 60°

What is the equation of this voltage waveform? V(t) = ?

Electrical Machine question.