Consider the combination of resistors shown in the figure below. 12.0 Ω 4.00 Ω Μ Μ α. Μ 6.00 Ω - Μ 5.00 Ω Μ 8.00 Ω H (a) Find the equivalent resistance between point a and b. Ω Ο (b) If a voltage of 23.3 V is applied between points a and b, find the current in each resistor. 12 Ω A 60 A 5Ω A 4Ω A 8 Ω A
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- = Using Kirchhoff's rules, find the following. (₁ = 70.9 V, 8₂= 60.7 V, and 83 1 E₁ R₂ E₂ 4.00 ΚΩ www R₂ 3.00 ΚΩ d E₁ 2.00 ΚΩ www R₁ (a) the current in each resistor shown in the figure above (b) the potential difference between points c and f 79.1 V.)Which of the following statements regarding circuits are true? To find resistance in a parallel circuit, you must sum the individual resitances The direction of conventional current is the direction of positive charge flow. In a circuit, electrons flow from high potential energy (at the negative terminal) to low potential energy (at the positive terminal). When electricity is passed through a lightbulb, the electrons are 'used up' by the bulb. All voltages in a loop sum to 12V The current that flows into a resistor is the same as the current that flows out. To 'short circuit' something means there is an alternate path of less resistance for the current to flow. Switching on a light happens immediately because electrons move from the power source to the bulb incredibly quickly. A 'kilowatt-hour' is a unit of power, not energy.A lead wire and an iron wire are connected in parallel. Their respective specific resistances are in the ratio 49: 24. The former carries 80 percent more current than the latter and the latter is 47 percent longer than the former. Determine the ratio of their cross sectional areas ROUND OFF TO THE NEAREST HUNDRETHS
- what is the equivalent resistance RabThe voltage divider shown in the figure has a potential difference (V) between point A and B and a potential difference (VO) between points C and D. What is V FO? A B RM 2R O A. 2 OB. 4 O C.3 OD. S M 2R R :2R C DCreate a general procedure to solve any circuit DC circuit with any number of resistors.
- 150 100 + VA- a -4V AVA -7V 81. B b Figure 2 shows a simplified model of a gas-discharge lamp. One characteristic of these lamps is that they exhibit negative resistance; in other words, as current increases the voltage drops further, making such lamps inherently unstable. As such, a current-limiting ballast is required. For the connection shown in the figure: 1. Find the equivalent Thevenin circuit of the lamp. 2. Find the ballast resistance needed to limit the current drawn from a 24-volt source to 6 amperes.In the figure: R1 = 27.3 Q, R2 = 93.1 Q and R3 = 1571.12 Q, then determine the value of the source current Is. 12 13 RT R1 R2 R3 E 1.33 0.98 1.44 1.73 1.15Which of the following statements are correct for the circuit below? Thanks to the capacitors I – C1 and C2, the voltage gain of the circuit increases. II – Capacitors C1 and C2 are coupling capacitors and provide an isolation function between AC and DC voltages in the circuit. Thanks to the III – RE resistor, the voltage gain of the circuit increases. Thanks to the IV – RE resistor, the stability of the circuit increases. The V – C3 Capacitor is a bypass capacitor and prevents the loss of voltage gain. Capacitor VI – C3 is a coupling capacitor and has no effect on the voltage gain in the circuit. VII – As the value of the source internal resistance Rs increases, the voltage gain decreases. VIII – The voltage gain decreases as the value of any RL load to be added to the circuit increases
- A dc generator and a battery are connected to a resistive load RL in the figure below. For each, determine the value of RL for maximum power transfer to RL. Next is to determine RL to 75% efficiencyIn the figure the current in resistance 6 is i6 = 1.33 A and the resistances are R₁ = R₂ = R3 = 1.56 02, R4 = 14.7 Q, R5 = 7.74 Q2, and R6 = 3.81 Q. What is the emf of the ideal battery? 80 R₁ Number i www R₂ www R₂ Units www R₁ www R₂ i6 www R6Three identical 2-0 resistors when combined in any manner possible whether in simple or compound circuit cannot have an effective resistance of* 0.75 0 3.0 0 0.67 0 O 6.0 0 A 20-V potential difference is applied across a series combination of a 10- N and a 30-0 resistor. The POTENTIAL DROP in the 30-0 resistor is 5.0 V O 10.0 V 20.0 V 15.0 V