R2=30 2) Calculate the equivalent resistance, Total current, individual current and individual voltage for the figure to theleft: R = 20 V= 5 V
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2) Calculate the equivalent resistance, Total current, individual current and individual voltage for the figure to the left:
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- Integrated Concepts A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. (a) What is the battery’s internal resistance? (b) What power is dissipated inside the battery? (c) At what rate (in °C/min ) will its temperature increase if its mass is 20.0 kg and it has a specific heat of 0.300 kcal/kg. °C, assuming no heat escapes?Figure 21.55 shows how a bleeder resistor is used to discharge a capacitor after an electronic device is shut off allowing a person to work on the electronics with less risk of shock, (a) What is the time constant? (b) How long will it take to reduce the voltage on the capacitor to 0.250% (5% of 5%) of its full value once discharge begins? (c) If the capacitor is charged to a voltage V0through a 100-O resistance, calculate the time it takes to rise to 0.865V0(This is about two time constants.)A circuit contains a D-cell battery, a switch, a 20- resistor, and three 20-mF capacitors. The capacitors are connected in parallel, and the parallel connection of capacitors are connected in series with the switch, the resistor and the battery, (a) What is die equivalent capacitance of the circuit? (b) What is the KC time constant? (c) How long before the current decreases to 50% of the initial value once the switch is closed?
- 1: Two combos or .) Determine Req for the combination of resistors shown below. Req= 7.4411 ✓ 2 R₂=110 R₁ = 4Q x C₂=3 F C₁=9F R₂ = 19 Q C₁=2 F tors & Two C.) Determine Ceq for the combination of capacitors shown below. D.) Determine Ceq for the combination of capacitors shown below. Ceq = 3.1668 F Ceq = C₁=19 F C₁ = 14 F HH Part 2: Four combos of 4 capacitors A.) Determine Ceq for the combination of capacitors shown below. Ceq C₂=11 F C3=17 F TH C.) Determine Ceq for the combination of capacitors shown below. Ceq = C₁=4 F HH Submit Answer C₂ = 17 F C₂=4 F C₂=14 F HH B.) Determine Req for the combination of resistors shown below. Req = 23.71 x 22 R₂ = 16 Q C₁-9 F R₁ = 13 Q C₁=7F C3-10 F B.) Determine Ceq for the combination of capacitors shown below. Ceq = C₂-15 F C₁ = 13 F R₂ = 19 0 C₁=18 F HE C₂= 11 F D.) Determine Ceq for the combination of capacitors shown below. Ceq = C₂-11 F C₁-5 F C₁-19 F C₁=8 F HHV1 1] Consider the circuit in the diagram with an unknown resistor R. The known resistor is R₁ = 1k, the power supply voltage is V, 12 Volts, and the measured output voltage is Vx8 Volts. Multisim insists on values, so I put -10 for the 12V unknown. I'll try to take this approach consistently in the homework diagrams, if possible. A) Determine the value of R. B) Determine the current i through the resistors. C) Determine the total power P supplied by the power supply. Hilt R1 ww 1kQ www Rx -122 XMM1 to isA large capacitor of 1000 µF is charged by a steady current of 1 mA until it reaches a voltage of 100 V. At that voltage, the charging circuit is disconnected. a) Calculate how long the charging takes.
- Circuit Problem: Express each labelled voltage and current (e.g., vx, ix) in terms of the resistances and source currents and voltages (e.g., R0).s. Complete the table using the given three resistors and a power supply below with their respective resistances and voltage as: R, = 30 R2 = 9 Q R3 = 18 Q { = 12 Volts SERIES CONNECTION PARALLEL UNKNOWN CONNECTION R, V, V, V, V,Question 6) Figure shows a circuit that contains two batteries and two resistors. Determine the current I in the circuit. A single-loop circuit that contains two batteries and two resistors. 12 2 6.0 V ww- 8.0 Q 24 V SAMSUNG & 5 7 8 9. y u i 口
- Potential difference (V) Learmers conduct an Investigation to determiine tho emf and intemal reshitanca th ballery. They set up a circut as shown ia the diagram beiow and measure the potentiel diference using the votmeter for dfferent currents in the circuit The results obtained are shown in the graph below. Graph of potential difference versus current 1.5 1,0 0.5- 0,5 Current (A) (1) 4.1 Use the graph to determine the emf of the battery. (3) 4.2 Calculate the gradient of the graph. 4.3 Which physical quantity is represented by the magnitude of the gradient of the graph? (2) 4.4 How does the voltmeler reading change as the ammeter reading increases? Write down INCREASES, DECREASES or REMAINS THE SAME. Use the formula emf = IR + Ir to explain the answer. (3) 42 Ageyser, labellad 2000w.is used for n Queage of Shours Per day, The Cost of electricity 1s Socents Pe kwh. Ocalculale the enagy used 54 the geyse, for 5hors Pday (4) Calatate the Cost of eleih.cly to operate tthe geyser f Month…QU5 a). A circuit consist of five resistors connected as below, determine the effective resistance in the circuit. R1 R3 R5 R2 Given that R1, R2,R3,R4 and Rs are given respectively as 500, 250, 300, 600 and 700Q, what is the current in the circuit if the potential across the resistors is 24 V? 4 b). A circuit consist of five Capacitors connected as below, determine the effective capacitance in the circuit. C5 C2 Given that C1, C2, C3, C4 and Cs are given respectively as 5 3mF, 6mF, 7mF and 8mF, What is the energy stored in the capacitors in the mF, 2.5mF, circuit if the potential across the capacitors is 24 V? c). Two charges +3C and +2 C are placed 20cm from their centres in vaccum. What magnitude of force will they exert on each other. If the second charge has its polarity changed to negative (-2 C). what would be the nature of the force? Will there be a change in the magnitude? [permittivity of free space = 8.85 x 10 12 C?/Nm² ]Find the currents of Is and Is and the voltage of V7. R-4k2 R=12kN ww + R-8ka3 R=24kNg 72v" R;=24k2g V7, FR,-9ka7 R=3k2 R3=12k2 R=12k2 R-6k2