ECE 201 Lab 5 Pre-Lab

In the figure on the right, the ideal batteries have emfs &1= 10 V and 82 = 83 = 6 V and the resistors are identical with R = 5 ohm. (a) independent eqaations to solve three unknown currents i, iz, and i; as shown in the figure and solve for the current i. That is, what is the magnitude and direction of iz? (b) (c) (d) batteries are equal to the total power loss in all the resistors. RI i ww. Apply Kirchhoffs loop and junction rules and obtain three El R3 R, 83 What is the magnitude and direction of iz? What is the total energy dissipation rate in all the resistors Prove that total power supplied to the circuit by the ww wwH

Paper and pen solution not AI please

+1 (a) Show that the potential difference across the battery is AV = E - ir and the current is given by load i= E r+Rload (b) If r= 19, plot AV versus Rload- (c) Given the above, explain why sometimes we don't care about the internal resis- tance. (d) Let & = 1.53V, and the measured voltage and current across a 15.602 load is respectively 1.49V and 96mA, what is the internal resistance?

Problem 1: An ideal PV cell has short circuit current Isc = 8 A at 1 sun insulation, 0.017 m2 area and reverse saturation current Io= 4x10-1" A. The temperature is 25C a. Draw the equivalent circuit of an ideal solar cell b. Find the open circuit voltage c. Load current and output power when output voltage is 0.56 V. d. Calculate the cell efficiency at V=0.56 V

For the simple equivalent circuit of 0.017 m2 PV cell shown below, the reverse saturatoin current is I0= 4 * 10-11 A and at an insolation of 1-sun the short circuit current is Isc = 6.4 A. At 25 degrees C, find the following:   a. The open circuit voltage b. The load current and the output power when the output voltage is V = 0.55 V c. The efficiency of the cell at V=0.55 V

Q2 (a) () What is the difference between a Wheatstone bridge and a Kelvin bridge? Your explanation should include suitable diagrams and applications. (ii) Figure Q2a(ii) shows an AC bridge and the meter indicates zero reading. Find the equation for R, from the real part of the impedance Figure Q2a(1) (i) Given that the value for the resistors R. R. R. are 100 02, 250 £2 and 300 1, respectively. The capacitors C, and Care 1 uF and 0.5 µF, respectively. Calculate the resistor. R