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- Quèstion 3 For the following circuit, as we increase the load resistance R, the diode current Ip increases. Ip tVD- Vs 3RL True False Moving to another question will save this response. Cip1. A solar cell has reverse saturation current is lo =4.3x 10 10 A and short- circuit current Isc = 3 A at 25 C. Parallel resistance Rs= 20 Q and series resistance RS = 0.05 Q. Find the cell current, open circuit voltage and voltage when the junction voltage is 0.45V. %3D3. A 45 uF capacitor and a 30 uF capacitor are connected in parallel to a 25 V battery. What is the total capacitance of the circuit? b. What is the voltage, V, across capacitor, C,? c. What is the voltage, V, across capacitor, C? d. How much charge, Q, is on capacitor, C,? How much charge, Q2, is on capacitor, C,? a. e.
- Considering the circuit in the following figure, if V1 varies between -20 V and 0 V and Vb=5V, then the current through V1 is (assume ideal diodes): * D1 D2 4 ko 2 kO V1 Vo Vb -8 V O a. ((V1 +5)/4) mA for V1 2 -5 V and Zero for V1 s -5 V O b. ((V1 -5)) mA for V1 s - 5 V and Zero for V1 2 -5 V Oc. ((V1 +5)/4) mA for V1 s - 5 V and Zero for V1 2 - 5 V O d. ((V1 +5)/4) mA for V1 s 5 V and Zero for V1 2 5 VA student wants to measure the electrir potential difference across the battery for the circuit below. R, A B C R, Except from point A to point D, where should a student hook up a voltmeter to measure the electric potential difference across the battery?1. A pn junction has No = 1018 cm3 and NA = 3x101 cm3. a. Calculate Vbi at T= 300 °K b. Calculate Vbi at T= 450 °K
- The figure shows a circuit that contains five identical resistors with resistance R = 10 ohms, one inductors with inductance L = 4 mH, and an ideal battery with emf = 14V. What is the current I in Amp through the battery long after the switch is closed? R 14 4, mm M Select one: Oa. 2.80A Ob. 0.40A Oc. 9.80A Od. 4.90A Oe. 245AA resistance of 12 ohms and capacitance of 0.01 farad is connected in series with a 200 volts battery. Find the charge after 0.5 second and the current after 0.4 secondQUESTION 5 (a) A PMMC instrument with a f.s.d of 10pA and Rm = 10002 to be employed as a voltmeter with range of 10V, 50V and 100V. Calculate the required values of multiplier resistors for the circuits of Figure 5(a)-i and Figure Q5(a.ii). R3 R3 R1 R, R R. 50V 10V 10V 50V 100V 100V (i) (ii) Figure Q5(a) (b) Two voltmeter are used to measure the voltage across the 50kn resistor in the circuit shown in Figure QS(b), Meter A has ac sensitivity of 10K2V, a guaranteed accuracy of 97% at full scale, and is set on its 200V range. Meter B has an ac sensitivity of 4KNV, a guaranteed accuracy of 98% at full scale and is set on its 100V range. Which meter will provide a more accurate result? 10k R1 R 15k V- 120Vrms Ry 50k Figure Q5(b)
- The R-L Circuit: An inductor with an inductance of 2.50 H and a resistance of 7.00 n is connected to the terminals ofa battery with an emf of 6.00 V and an internal resistance of 1.00 n. What is the rate ofincrease of current at the instant when the current is 0.500 A? A) 0.8 A/s B) 0.6 A/s C) 0.4 A/s D) zero E) None of the above.A battery is comprised of 4 cells connected in parallel, each cell has an EMF with 1.5V and an internal resistance of 600.00 mΩ. There is no load connected to the terminal. Solve for Rint.For the circuit shown in figure. For the circuit skown in Figure If Vec= 35 V, I£ = 3.22 mA VE- () Vec. Vee 2Ks2 300ks RE The value of RE is . Kohm.. * 1.9 1.4 О 2.1 О 1.6 O 2 O 1 The value of Beta is . . O 53.93 57.39 55.93 O 54.93 O 51.39 O 56.39 The value of Vc is . Volt..* O 21.24 O 29.24 O 24.27 23.25 25.24 O 27.24 O O ООО О оо ООО О ОО