The load across a 50.0-V battery consists ofa series combination of two lamps with resistances of 125 $2 Dand 225 Q. a. Find the total resistance of the circuit. b. Find the current in the circuit. 14. c. Find the potential difference across the 125-2 Olamp.
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- Using the rules for parallel circuits and Ohmslaw, solve for the missing values. ETE1E2E3E4ITl1I2l33.2AI4RT3.582R116R210R3R420PTP1P2P3P41. The no-load terminal voltage of a battery is 30 V. The terminal voltage drops to 22 V when supplying a current of 5 A. Determine the emf and the internal resistance of this battery. Ans. r= 1.6 ohm 2. Two identical zinc carbon batteries are available. When connected in series, they supply 0.5 A to a 4 ohm resistor. When connected in parallel, they supply 0.4 A to a 5 ohm resistor. Determine the emf and internal resistance of each battery. Ans. 2.667 V and 3.333 ohm 3. When supplying a current of 5 A, the terminal voltage of a battery is 15 V. The battery is then recharged at a rate of 3 A and the terminal voltage is found to be 21 V. Determine the emf and the Internal resistance of the battery. Ans. 18.75 V and 0.75 ohm 4. A battery with an emf of 12 V and an internal resistance of 0.8 ohm is to be recharged through a 20 V source. (a) show by means of a diagram the connection of the circuit elements. (b) What is the current in the circuit? (c) The recharging current is to be…When resistors with higher wattage ratings are required, resistors are generally used to dissipate the excessive heat. a) Variable b) Fixed c) Wirewound d) Preset The diode is considered shorted when both anode and cathode has a) Low resistance b) High resistance c) Different resistance d) None of the above When two resistors are connected in parallel then their overall power rating is a) Increased b) Decreased c) Doubled d) Reduced
- use the constant voltage drop model in analyzing the diode circuit below: 10 92 V₁ (+ M 1 V D₁ If V₁ is -3 V, what would be the state of the diodes? A. D₁ and D₂ are both OFF C B. D₁ is OFF and D₂ is ON - 1 V D₂ C. D₁ is ON and D₂ is OFF D. D₁ and D₂ are both ON + 1092 Vo5 For the following circuit: a) Draw a table to mention the names, the states (ON/OFF) and turn on voltages for all the diodes of the circuit. (V = 3.5V for D3) and draw the equivalent circuit. b) Find the voltage across R1, R2, R3 c) Find the current through D1 , Dz , D3 and D4 D1 Si R2 D2 5002 Si R1 7502 R3 D3 D4 V1 1kn Blue GaAs 10vD. , D2 A R2 200 Q 100HZ C1 R1 R3 D4 D3 8 µF 2 kQ 3 kQ D Answer the following questions, since the minimum voltage value to transmit the zener diode in the figure given above is 9V and the power of this Zener diode is 0.3 watts. a) Enter the name of the circuit in the figure. b) What are the diodes/diodes in positive half-loop transmission?
- В- for the circuit shown in figure 2, the resistance of both diodes is 7 0. In the practical model of the diode, determine the current through the resistor RI when: • Switch Si is ON and switch S2 is OFF • Switch Si is OFF and switch S2 is ON S1 D S2 D2 Figure 2 v2 10 v R1 850 0 V3Half-wave rectifier loaded with R-L is fed with a 120 VAA 60 Hz source. 10 Ω loadFind the inductance value that limits the average load current to 5A for the resistance.In the circuit below, we have a Zener Diode circuit with a load, RL. Use the same measurements for source voltage V1 and resistor R3 resistance as in the circuit schematic. V1 -15V R3 2700 D1 1N753A RL Determine the lowest possible value for the load RL, so that the voltage drop across it is equal to the Zener voltage. For your diode, use model Zener 1N753A. This diode has a Zener voltage of 6.2V, a Zener current of 60mA, a Zener impedence of 72, and a test current of 20mA.
- 10 K D3 The diodes in the circuit are Silicon with forward voltage of 0.7 V. Fill up the table showing the state, voltage and current of each of the diodes. 8 K Show how you validated the state of each diode. Follow the reference shown in determining whether the diode voltages and currents are positive or negative. 5 V 1K 1Di mA Diode State VD + VD - D1 D2 D32. Draw the graph of the voltage across the 10K resistor (calculate the values for the different voltages across the 10K resistor) of the circuit in the figure, knowing that the voltage source V is sinusoidal. And the diodes are silicon4 1.0 k VS2 VSI 25 V 8 V Diodes D1 and D2 in the figure are assumed ideal, what is the current through the diodes? * D₁ B R www C