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The charge entering the positive terminal of an element is
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Basic Engineering Circuit Analysis
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ANALYSIS+DESIGN OF LINEAR CIRCUITS(LL)
- 1.00 MQ A conducting sphere is charged by an emf source & through a 1.00 MN resistor. When the sphere is fully charged, it has 2 µC charge. The highest current during the charging was I mA. What is the electrical potential energy of the sphere when it is fully chargeď? Give your answer in mJ.arrow_forward/ Form graph shown below. Drive the energy as a function of time. If the resistance 10k2 Charge (uC) Timeimsec)arrow_forwardyUestion (1); Determine the current flowing through an element if the charge flow is given by: 1- q(t) = (5t2 + 12t - 2)mC at time = 500ms 2- q(t) = (15 sin60nt)nC at time = 750msarrow_forward
- Q1) For the network in a. Find the mathematical expression for the voltage across the capacitor after the switch is thrown into position 1. b. Repeat part (a) for the current ic. c. Find the mathematical expressions for the voltage ve and current ic if the switch is thrown into position 2 at a time equal to five time constants of the charging circuit. d. Plot the waveforms of v and ic for a period of time extending from t 0 to t = 30 µs. %3D 2. E 80 V C 10 pF Ve R2 390 k2 R1 100 k2arrow_forwardANS: 5) You use a voltmeter to measure potential difference from a very long wire carries a uniform linear charge density 2. The meter reads 450V when one probe of the meter is placed 4.5 cm from the wire and the other probe is 2.5 cm farther from the wire. What is 2? a) 9 x 107 C/m b) 9 x 10 C/m c) 2.5 x 10-7 C/m d) 2.5 x 10 C/m e) none of above ANS:arrow_forwardThe velocity of electrons with current density 1 unit and a charge density of 4000 nC/m³ is Select one: a. 0.25*106 O b. 0.1*106 O c. 0.2*106 O d. None of thesearrow_forward
- The . capacity of the charge body to do work the . is the .24 * .electrical potential to work the greater is the electrical potential lower, lower lower, greater greater, lower greater, greater none of them Oarrow_forward2. Determine the time required for 4 x 1016 electrons to pass through the imaginary surface of the figure if the current is 5 mA. 3. Find the potential difference between two points in an electrical system if 60 J of energy are expended by a charge of 20 C between these two points. 3. A certain copper wire has a resistance of 25 ohms at 10°C. Take the temperature coefficient at 10°C to be 0.00409 deg/C. What must be the maximum operating temperature of the wire if its resistance is to increase by at most 20%? 4. An incandescent lamp has a tungsten filament whose resistance is 96 ohm at its operating temperature of 2900°C. Calculate the filament resistance when the lamp is disconnected from the electric source under which conditions the temperature is 24°C. 5. Determine the magnitude of the current flowing through a 4.7 kN resistor if the voltage across it is (a) 1 mV; (b) 10V; (c) 4e^-t V; (d) 100 cos(5t) V; (e) –7 V.arrow_forwardThe electric field at a distance of 100 cm from an isolated point particle with a charge of 4x109 C is: O a. 36.0 N/C O b. 3.6 N/C O c. 360 N/C O d. 0.36 N/Carrow_forward
- 1. Determine the current flowing through an element if the charge flow is given by (a) q(t) = (3) mC (b) q(t) = (4t? – 20t – 4) C (c) q(t) = (15te-3t – 2e-18t) nc (d) q(t) = 5t2(3t³ + 2)pC (e) q(t) = 2e-3'sin(10nt) µCarrow_forwardQuestion (1): Determine the current flowing through an element if the charge flow is given by: 1- q(t) = (5t2 + 12t – 2)mC at time = 500ms 2- q(t) = %3D | = (15 sin60nt)nC at time = 750ms %3D (15M..l)arrow_forwardA copper wire has a diameter of 2.05 mm and carries a current of 15 A due solely toelectrons. (These values are common in residential wiring.) Each electron has a charge of -1.60 x 10-19 C. Assume that the free-electron (these are the electrons capable of movingthrough the copper) concentration in copper is 1029 electrons/m³. Find the average velocity ofthe electrons in the wire.arrow_forward
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