A load draws a current from a voltage source. the equation of the current and voltage are I = 10coswt and V = 220sinwt. What is power? choices: a. 2200w b. 0 c. 1556w d. 1320w
Rearrange the equation current = voltage/resistance to express resistance in terms of current and voltage. Then solve the following: A certain device in a 100-V circuit has a current rating of 30 A. Part A What is the resistance of the device how many ohms)? Express your answer to two significant figures and include the appropriate units. HAO? R= Value Units Submit Request Answer
Does the intensity of a laser affect the amount of current that flows through a photo tube? Does the intensity of a laser affect the voltage across a photo tube? I'm working on a lab that has a video where you can adjust the wavelength and see the subsequent change in current or voltage measured, but I'm unable to attach it. I'm just hoping to understand these questions better conceptually. My thoughts on the first one: Yes, the intensity of...
Problem 2 (25 points) The threshold current of a semiconductor laser is a critical electrical current required for the semiconductor laser to start emitting laser light. Above the threshold current, the output power of a semiconductor laser increases as the electrical current increases. For a semiconductor laser around the wavelength 1.31 micron, the threshold current is 6 mA. When the electrical current increases from 20 mA to 40 mA, the optical output laser increases as thie ron the threshold current...
. Determine the Thevenin equivalent (with respect to terminals ab) by finding the open circuit voltage and the short circuit current. [Note that the open circuit voltage is the same as voltage across the 60 resistor and that the short circuit current by-passes the 60 resistor.) Use any method we have discussed to determine the voltage and current. 2/ 201 Vi-9. Ni 5 5 u Nervi-N2 = 0 to 10 18A 54 M ( 13 15 do to suintão toluoto...
looking at the generalized nerst equation, what would be the effect on voltage of increasing the temperature? Explain what general implications this may have for current flow in a wire.
1. Use the voltage divider equation to determine V 12 V 20A 2. Use the current divider equation to determine l1 I, 30x 3. Use Nodal analysis to determine V.. lov (+ 4. Use mesh analysis to determine the current through the voltage source. SA IA
Find the Steady State Voltage and Current Values. Develop the equation for i(t) , the current through the inductor and Vout(t). I need help, I don't know if my calculations are correct, I found the neper frequency to be: a=439.109 rad/sec and resonant frequency to be Wo=14586.5 rad/sec. This is a parallel step response RLC circuit The circuit is underdamped. Please show all work clearly so that I can understand the process. Vout(t) is the voltage across R2 (which is...
Level II: AC The graph below shows the voltage and current graphs for an inductor. (a) Determine the emf frequency. (b) Write the voltage equation. (c) Write the current equation. (d) What is the value of the inductor? Show al calculations. Voltage 0V .05 A 0.03 s 0.06 s 0.0S A -10% Current
4.32 Laser diode efficiencies Consider a commercial InGaAsP FP laser diode (Mitsubishi ML720 and 725 seriesi operating at ?-1310nm for optical communications. The threshold current is 5 mA. At 1 20mA, the out- put optical power is 5 mW and the voltage across the diode is 1.1 V. Calculate external quantum efficiency (OE), external differential QE, power conversion efficiency, and the slope efficiency of the diode. What is the forward diode current that gives an output optical power of 2...