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- A neart pacema ker 4ires 69 times a minute eachtime a a5.0nf capacitur is charged Cbya batterin seris w Hh a resisTor) TO 0.oda 07 1t5 qull voltageS=69+ime per minuts What is the value o7 therSIstance in r? R=?Two batteries with el= 3V and e2 =5V, as in the in the figure, 21 = 1D W,It IS connected to Circuit three resistors 22 = 20w and 23= 30W + - 3V 10-2 Iz 202 302 Using +he Kirchoff rules Il, Iz ond I3 current values resistors tind it (Eirst write possing throught the the equotions cleorly ithen find the currents)When a 220 Volt potential difference is applied to a heater with a resistance of 20 Ω;a) The power of the heater?b) The energy consumed when working for 12 hours and when the kW-hour of electricity is 30 kuruş, the heater isHow many TL invoices will the work reveal?
- ) An electron beam consist of 1016 electrons passing through a given cross section n one minute. (a) Determine the current in amperes. (b) If the potential difference between the tip of the electron gun and the screen is 5000 V, determine the resistance of the path taken by the electron beam.When two unknown resistors are connected in series with abattery, the battery delivers 225 W and carries a total currentof 5.00 A. For the same total current, 50.0 W is delivered whenthe resistors are connected in parallel. Determine the value ofeach resistor.MF with a 5x102 A capacitor with a capacity of 120 resistor is connected in series to n 800 v power supply. a) Find the time constont. b) Calculate the Current when the amount of chorge in the copacitor reaches g0 percent of its maximum value.
- An 80-2 resistor and a 20-2 resistor are connected in parallel, and then this combination is connected in series with a 32- resistor and a 24-V battery. An ammeter to measure the current through the 80- 2, and a voltmeter to measure the potential difference across the 32 Q is needed. TOraw the cireit 2 K he total 1e meter astanco of the cire What is the difference -potential across the 32-Q resistor? Across the 80-2 resistor? = 5. What is a fuse and how does it protect a circuit or device to which it is connected? 6. Show using diagrams how using only 2 Q resistors the following resistances can be made: ( a) 0.5 Ω (b) 1 Ω, ( c )3 Ω; ( d ) 5 Ω. 7. Three wires in a circuit meet in a common point. The currents flowing in two of them are 2 A and 3 A respectively. What are the possible values of the current in the third wire? Explain your answer [drawings would help]. D koksch_b201pdt Show AN MacBook Air esc 288 10 F11 F12 %23 & 2 4. 6. 8 9 11 delete Q W R T Y tab ps lock S D G H J. 11 K L…IN 77. If electric power is transmitted over long distances, the resistance of the wires becomes significant. Why? Which method of transmission would result in less they ofte wires. W F6 84. (a) energy wasted-high current and low voltage or low current and high voltage? Explain your answer. resistane V and b i potentia V is ap 78. The ideal batteries have emfs 12 V and %3D 6.0 V. What are (a) the current current, the dissipation rate in (b) resistor 1 (4.0 2) and (c) resistor 2 (8.0 2), and the energy transfer rate in (d) battery 1 and (e) battery 2? Is energy being supplied or absorbed by (f) battery 1 and (g) battery 2? 79. Consider 85. A series, a applied capacit 4F constar 10.0 2 25.0 V capacit the circuit shown. Find (a) 10.0 2 86. Cc the current the 20.0-2 resistor and (b) potential difference between points a and b. the 20.0 2 75 00'S 80. An automobile battery has an emf of 12.6 V and an internal resistance of 0.0800 2. The headlights together present equivalent resistance 5.00…An unknown resistor is connected between the terminalsof a 3.00 V battery. Energy is dissipated in the resistorat the rate of 0.540 W. The same resistor is then connectedbetween the terminals of a 1.50 V battery. At what rate is energynow dissipated?
- A pacemaker sends a pulse to a patient’sheart every time the capacitor in the pacemaker charges to a voltageof 0.25 V. It is desired that the patient receive 75 pulses per minute.Given that the capacitance of the pacemaker is 110 mF and that thebattery has a voltage of 9.0 V, what value should the resistance have?The largest operating wind La generator in the world has a rotor diameter of almost 100m. This nits generator can deliver 3 3.1 MW of power. Suppose you connect adl 3.0 K resistor, a 4.0K resistor, and a 5.ok resistor in parallel- klhat potential difference must be applied across these resistors) in order to dissipate power w 1.00 percent of the Jock equal to power provided by the generator? Show all working step-by-step gat2 word stzWhen applying Kirchhoff's voltage law, if you measure the voltage across a battery from the negative terminal to the positive terminal, it is considered ; when you measure the voltage difference across a resistor R oppositive the flow of current it is considered O positive; negative zero; zero negative; negative O positive; positive negative; positive