power absorbed by variable resistor
A circuit connected in series contains a voltage source of 20 V, a 5 ohm resistor, and a variable resistor, R. Determine the powers absorbed by the variable resistor ranging from 0 to 20 ohms.
Internal resistance of a battery
The circuit is used to measure the internal impedance of a battery. The battery being tested as a NiMH battery cell. A fresh battery is being tested, and it is found that the voltage Vout, is 2.28 V with the switch open and 2.27 V with the switch closed. Find the internal resistance of the battery. See attached file f ...continues
please see attached
Using mesh analysis, find the voltage gain Av = V2/V1 in the circuit. See attached file for full problem description.
Using superposition, determine the component of the current through R3 that is due to VS2. VS1 = VS2 = 450V. (see diagram in attached file)
Find the Thevenin equivalent resistance seen by resistor R3 in the circuit. Compute the Thevenin (open-circuit) voltage and the Norton (short-circuit) current when R3 is the load. VS1=VS2= 450V (see diagram in attached file)
Efficiency and power of circuit
The equivalent circuit of Figure P3.57 has Vt = 35 V and Rt = 600 ohms. If the conditions for maximum power transfer exist, determine the value of RL, power of RL, and efficiency of the circuit. See diagram in attached file.
Electrical Grounding and polarity
To whom it may concern, From chemistry I understand that electron flow is from negative to positive, in the external circuit. I also understand that "conventional current" flows positive to negative, and is used to solve mathamatical electricity problems and it was determined back in the day as current direction. But, if t ...continues
Just before the switch is opened at t=0, the current through the inductor is 1.70 mA in the direction shown in figure (PLEASE SEE ATTACHMENT). Did steady-state conditions exist just before the switch was opened? L = 0.9 mH; R1 = 6k Ohm; R2 = 6k Ohm; R3 = 3k Ohm; Vs = 12V
Determine the current through the capacitor just before and just after the switch is closed in the figure. Assume steady-state conditions for t< ... (PLEASE SEE ATTACHED FOR COMPLETE PROBLEM AND DIAGRAM)
