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## Physics help !!? | Yahoo Answers

R = V/i = 10/0.5 = 20Ω

V(t) = 10cos50πt = 10cos9000t where 9000t is in degrees because 50π rads/sec * 180°/π radians =9000

i(t) = 0.5cos50πt = 0.5cos9000t where 9000t is in degrees

At 15ms V = -7.07 and i = -0.3536A and they are exactly in phase with each other. 9000*15e-3 = 135°

Representation of AC Current and Voltage by Rotating… – In case of a resistor, the current across a resistor is in phase with the voltage source. Rule 2: In circuits which have combinations of L, C & R in Series it is customary to draw the phasor representing Current horizontally and call this the Reference phasor.Figure 15 – Waveforms and phasor diagrams of voltage and current of a resistor – the voltage and current are in phase. To add two phasors for example we draw them connected top to tail and the resultant will be the phasor closing the triangle.Physics Scientists and Engineers. FIGURE EX32.5 shows voltage and current graphs for a resistor.a. a. What is the emf frequency f ? b. What is the value of the resistance R? c. Draw the resistorâ€™s voltage and current phasors at t = 15 ms.

48520 Electronics and Circuits Lecture Notes | Electrical… – and the instantaneous current through the resistor is. Graphical representations of the phase relationships between current and voltage are often useful in the The vertical axis on a phasor diagram could be either the voltage or the current, depending on the…Let's learn how to calculate current and voltage across each resistor in a circuit. So let's draw the rest of the circuit as it is, but replace this combination with a single resistor of eight ohms.Voltage lags current (current leads voltage)in a series R-C circuit. Table Method. Notice how the voltage across the resistor has the exact same phase angle as the current through it, telling us that E and I are in Thus, the voltage phasor diagram can be replaced by a similar impedance diagram.

[Solved] FIGURE EX32.5 shows voltage and current… | SolutionInn – Part C Draw the resistor's voltage and current phasors at t=15ms. https Physics help !!? The figure (Figure 1) shows voltage and current graphs for a resistor. I found part A , emf frequency = 25 Hz.Draw the current Draw the resistor Draw the emf E0 The phasors vector I at some voltage VR in phase as the vector sum VR and VC form arbitrary Example: Current and Voltage of an Inductor A 25 µH inductor is used in a circuit that is driven at 100 kHZ. The current through the inductor reaches…You use Kirchhoff's current law and sum the two phasor currents together to get the total current. Say we take the 15 A current as the reference and assume the 10 A current lags by 30º