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Carbon is in the...
A 15-W compact fluorescent light bulb is used in a lamp plugged into a 120-V wall...
A 15-W compact fluorescent light bulb is used in a lamp plugged into a 120-V wall socket. You can assume the lamp itself has zero resistance. Find (a) the resistance of the light bulb, (b) the maximum current through the bulb, and (c) the maximum power used by the light bulb. Also, if the frequency of the electricity is the typical household value of f = 60 Hz, what are the first two times that the current going through the...
A voltmeter connected across the terminals of a tungsten-filament light bulb measures 117 V when an...
A voltmeter connected across the terminals of a tungsten-filament light bulb measures 117 V when an ammeter in line with the bulb registers a current of 0.641 A. a) Find the resistance of the light bulb. (Enter your answer in ohms.) b) Find the resistivity of tungsten (in Ω · m) at the bulb's operating temperature if the filament has an uncoiled length of 0.593 m and a radius of 2.33 ✕ 10−5 m.
Review Con: Part A An incandescent light bulb uses a coiled filament of tungsten that is...
Review Con: Part A An incandescent light bulb uses a coiled filament of tungsten that is 580 mm long with a diameter of 46.0 um. At 20.0°C tungsten has a resistivity of 5.25 x 1012.m. Its temperature coefficient of resistivity is 0.0045 (Cº) , and this remains accurate even at high temperatures. The temperature of the filament increases linearly with current, from 20°C when no current flows to 2520°C at 1.00 A of current What is the resistance of the...
Show you work. All answers should be given with two decimal places. 1. A current of...
Show you work. All answers should be given with two decimal places. 1. A current of 3.33 mA (IMA -0.001A) passes through a resistor which is at a temperature 22.3 °C. As a result, a voltage of 3.00 Volts is generated across the resistor. Calculate the resistance of the resistor in k 2. Rrom 2. Now the same resistor as in question 1 is immersed in liquid nitrogen (T--195.8 °C). The voltage across the resistor is still 3.00V but the...
1- A 25-kVA, 3-phase, wye-connected, 400-V alternator has a synchronous reactance of 1.6 ohms per phase....
1- A 25-kVA, 3-phase, wye-connected, 400-V alternator has a synchronous reactance of 1.6 ohms per phase. The alternator is to have zero voltage regulation at half-load. Neglecting the armature resistance, find the operating power factor and the developed power 2. A 500-kVA, 3600-V, 3-phase, 60-Hz alternator has an effective armature resistance per phase of 0.40 ohm Mechanical and iron losses is 10 kW, field current at full load unity power factor is 70 A. The exciter voltage is constant at...
Multiple Choice and Short Answer: There are 13 questions worth 5 points each. Choose the one...
Multiple Choice and Short Answer: There are 13 questions worth 5 points each. Choose the one alternative that best completes the statement or answers the question. A resistor with a measured resistance of 300 s 3 Q is measured to have a voltage drop of 1.50 plusminus 0.01 volts across it. What is the calculated current through the resistor, including uncertainty? 5.00 plusminus 0.08 mA 5.00 plusminus 0.02 mA 200 plusminus 1 A 200 plusminus 3 A 450 plusminus 1...
Write neat please. Show step by step please. Read instructions carefully. do all problems please. double...
Write neat please. Show step by step please. Read
instructions carefully. do all problems please. double check your
work. Box in answer please. Thank you
Question 33 1 pts A 60-W light bulb and a 100-W light bulb are each connected to separate 120 V outlet. Which light bulb has more current in it? Both have the same current. O The 100-W bulb. O The 60-W bulb. Question 34 1 pts Two lamps, one with a thick filament and one...
1) Which of these scientists pioneered the study of electricity? A) Isaac Newton B) Galileo C)...
1) Which of these scientists pioneered the study of electricity? A) Isaac Newton B) Galileo C) Benjamin Franklin D) all of the above 2) The nucleus of an atom is charged A) positively B) negatively C) both of these D) none of the above 3) The electric charge of all electrons A) vary from atom to atom. B) vary from ion to ion. C) are identical. 4) Compared to the mass of a proton, the mass of an electron is...
7-11 please 7. Two parallel conducting plates are connected to a constant voltage source. The magnitude...
7-11 please
7. Two parallel conducting plates are connected to a constant voltage source. The magnitude of the electric field between the plates is 2,000 N/C. If the voltage is halved and the distance between the plates is reduced to 1/4 the original distance, the magnitude of the new electric field is (A) 8000 N/C (B) 1,600 N/C (C) 2,400 N/C (D) 4,000 N/C (E) 10,000 N/C 8. A parallel-plate capacitor is charged by connection to a battery. If the...
(a) Which part of an atom is positively charged, and which part is negatively charged? (b)...
(a) Which part of an atom is positively charged, and which part is negatively charged? (b) How does the charge of an electron compare with the charge of another electron? (c) How does the charge of an electron compare with the charge of a proton? Can charge be created or destroyed? How does that answer relate to the conservation of charge? How is electric charge similar to mass? How are they different? What are two ways electric charge can be...
Review Con: Part A An incandescent light bulb uses a coiled filament of tungsten that is 580 mm long with a diameter of 46.0 um. At 20.0°C tungsten has a resistivity of 5.25 x 1012.m. Its temperature coefficient of resistivity is 0.0045 (Cº) , and this remains accurate even at high temperatures. The temperature of the filament increases linearly with current, from 20°C when no current flows to 2520°C at 1.00 A of current What is the resistance of the...
Show you work. All answers should be given with two decimal places. 1. A current of 3.33 mA (IMA -0.001A) passes through a resistor which is at a temperature 22.3 °C. As a result, a voltage of 3.00 Volts is generated across the resistor. Calculate the resistance of the resistor in k 2. Rrom 2. Now the same resistor as in question 1 is immersed in liquid nitrogen (T--195.8 °C). The voltage across the resistor is still 3.00V but the...
Multiple Choice and Short Answer: There are 13 questions worth 5 points each. Choose the one alternative that best completes the statement or answers the question. A resistor with a measured resistance of 300 s 3 Q is measured to have a voltage drop of 1.50 plusminus 0.01 volts across it. What is the calculated current through the resistor, including uncertainty? 5.00 plusminus 0.08 mA 5.00 plusminus 0.02 mA 200 plusminus 1 A 200 plusminus 3 A 450 plusminus 1...
Write neat please. Show step by step please. Read
instructions carefully. do all problems please. double check your
work. Box in answer please. Thank you
Question 33 1 pts A 60-W light bulb and a 100-W light bulb are each connected to separate 120 V outlet. Which light bulb has more current in it? Both have the same current. O The 100-W bulb. O The 60-W bulb. Question 34 1 pts Two lamps, one with a thick filament and one...
1) Which of these scientists pioneered the study of electricity? A) Isaac Newton B) Galileo C) Benjamin Franklin D) all of the above 2) The nucleus of an atom is charged A) positively B) negatively C) both of these D) none of the above 3) The electric charge of all electrons A) vary from atom to atom. B) vary from ion to ion. C) are identical. 4) Compared to the mass of a proton, the mass of an electron is...
7-11 please
7. Two parallel conducting plates are connected to a constant voltage source. The magnitude of the electric field between the plates is 2,000 N/C. If the voltage is halved and the distance between the plates is reduced to 1/4 the original distance, the magnitude of the new electric field is (A) 8000 N/C (B) 1,600 N/C (C) 2,400 N/C (D) 4,000 N/C (E) 10,000 N/C 8. A parallel-plate capacitor is charged by connection to a battery. If the...
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