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It is necessary to control a light bulb rated at 100 W, powered from a 208-Vrms,...
A 100-W light bulb draws a 1.2-A current. What is the voltage drop across the light...
A 100-W light bulb draws a 1.2-A current. What is the voltage drop across the light bulb? Answer: V
Course Document... Apps HW-Ch25 Exercise 25.35 The power rating of a light bulb (such as a 100-W bulb) is the powe...
Course Document... Apps HW-Ch25 Exercise 25.35 The power rating of a light bulb (such as a 100-W bulb) is the power it dissipates when connected across a 120-V potential difference. Part C What is the resistance of a 60 W bulb? Express your answer using two significant figures. VAXD ? R = Request Answer Submit Part D How much current does the 60 W bulb draw in normal use? Express your answer using two significant figures. VOAED ? A I=...
You obtain a 50-and a 100-W light bulb. Instead of connecting them in the normal way,...
You obtain a 50-and a 100-W light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. If each one is an incandescent bulb of fixed resistance, which statement about these bulbs is correct? Both bulbs glow with the same brightness, but more than their normal brightness. The 100-W bulb glows brighter than the 50-W bulb. The 50-W bulb glows more brightly than the 100-W bulb, Both bulbs...
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...
Imagine that you turn on the lamp in your room that contains an incandescent light bulb and that you stand 1m from the light. Suppose further that your bulb is rated at 100 W. What is the intensity o...
Imagine that you turn on the lamp in your room that contains an incandescent light bulb and that you stand 1m from the light. Suppose further that your bulb is rated at 100 W. What is the intensity of the light that passes out through this sphere at this distance of say 1m? Now compare this to a milliwatt laser at the same distance away. How many times more/less intense is the laser beam to your eye compared to the...
Fig. 1. Logic circuit for Question 1 2. The 60 W light bulb shown in Fig....
Fig. 1. Logic circuit for Question 1 2. The 60 W light bulb shown in Fig. 2 is rated at 120 volts. Calculate the required supply voltage V, to make the light bulb operate at the rated conditions. (2 pts) 50 22 Bulb 3 802 Fig.2. Circuit for Question 2 (3 pts) 3. For the circuit shown in Fig. 3, using KVL & KCL: a. Determine the currents i1, 12 & 13 b. The voltage across the resistor R1, R2...
Questions 1 to 3 relate to a three-phase SCR rectifier supplied from a 415 Vrms, 50 Hz ac source. For a 100 Ω resistive load, determine the peak, minimum and average load current for SCR firing angle...
Questions 1 to 3 relate to a three-phase SCR rectifier supplied from a 415 Vrms, 50 Hz ac source. For a 100 Ω resistive load, determine the peak, minimum and average load current for SCR firing angles of: (a) a-0° (5.87 A, 5.08 A, 5.6 A) (b) α = 45° (5.67 A, 1.52 A, 3.96 A) (c) α-70° (4.5 A, 0 A, 2.0 A) How will your answers change if a very large inductance (zero resistance) is added in series...
7. Two light bulbs with ratings of 40 W and 100 W are plugged into sockets...
7. Two light bulbs with ratings of 40 W and 100 W are plugged into sockets supplying 110 V. A) Calculate the resistance of each. Which has more resistance? The more resistance. (Notice that voltage is fixed) W bulb has B) If the 100 W bulb is operated continuously for 2 full days and electric energy costs $0.12 per kWh, how much does it cost? Convert W to kW multiply by the number of hours to get kW.h multiply by...
answer Q5/// The maximum power dissipated in a 4 load is 100 w when connected to...
answer
Q5/// The maximum power dissipated in a 4 load is 100 w when connected to a d.c. voltage V and internal resistance R. Calculate: the current in the load, internal * .resistance R, and voltage V 4 A, 3 Ohm, 30 v o 3 A, 5 Ohm, 12 v 0 2 A, 6 ohm, 24v O 6 A, 2.5 ohm, 220 v O 5 A, 4 Ohm, 40 v O 10 A 4.5 ohm. 60v 0
A number 16 copper wire has a diameter of 1.291 mm. Calculate the resistance of a...
A number 16 copper wire has a diameter of 1.291 mm. Calculate the resistance of a 43.0 m long piece of such wire. (Use 1.72x 10-8 sm for the resistivity of copper.) 5.650x10-1 Ohm You are correct. Previous Tries For safety, the National Electrical Code limits the allowable amount of current which such a wire may carry. When used in indoor wiring, the limit is 6.0 A for rubber insulated wire of that size. How much power would be dissipated...
A 100-W light bulb draws a 1.2-A current. What is the voltage drop across the light bulb? Answer: V
Course Document... Apps HW-Ch25 Exercise 25.35 The power rating of a light bulb (such as a 100-W bulb) is the power it dissipates when connected across a 120-V potential difference. Part C What is the resistance of a 60 W bulb? Express your answer using two significant figures. VAXD ? R = Request Answer Submit Part D How much current does the 60 W bulb draw in normal use? Express your answer using two significant figures. VOAED ? A I=...
You obtain a 50-and a 100-W light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. If each one is an incandescent bulb of fixed resistance, which statement about these bulbs is correct? Both bulbs glow with the same brightness, but more than their normal brightness. The 100-W bulb glows brighter than the 50-W bulb. The 50-W bulb glows more brightly than the 100-W bulb, Both bulbs...
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...
Fig. 1. Logic circuit for Question 1 2. The 60 W light bulb shown in Fig. 2 is rated at 120 volts. Calculate the required supply voltage V, to make the light bulb operate at the rated conditions. (2 pts) 50 22 Bulb 3 802 Fig.2. Circuit for Question 2 (3 pts) 3. For the circuit shown in Fig. 3, using KVL & KCL: a. Determine the currents i1, 12 & 13 b. The voltage across the resistor R1, R2...
Questions 1 to 3 relate to a three-phase SCR rectifier supplied from a 415 Vrms, 50 Hz ac source. For a 100 Ω resistive load, determine the peak, minimum and average load current for SCR firing angles of: (a) a-0° (5.87 A, 5.08 A, 5.6 A) (b) α = 45° (5.67 A, 1.52 A, 3.96 A) (c) α-70° (4.5 A, 0 A, 2.0 A) How will your answers change if a very large inductance (zero resistance) is added in series...
7. Two light bulbs with ratings of 40 W and 100 W are plugged into sockets supplying 110 V. A) Calculate the resistance of each. Which has more resistance? The more resistance. (Notice that voltage is fixed) W bulb has B) If the 100 W bulb is operated continuously for 2 full days and electric energy costs $0.12 per kWh, how much does it cost? Convert W to kW multiply by the number of hours to get kW.h multiply by...
answer
Q5/// The maximum power dissipated in a 4 load is 100 w when connected to a d.c. voltage V and internal resistance R. Calculate: the current in the load, internal * .resistance R, and voltage V 4 A, 3 Ohm, 30 v o 3 A, 5 Ohm, 12 v 0 2 A, 6 ohm, 24v O 6 A, 2.5 ohm, 220 v O 5 A, 4 Ohm, 40 v O 10 A 4.5 ohm. 60v 0
A number 16 copper wire has a diameter of 1.291 mm. Calculate the resistance of a 43.0 m long piece of such wire. (Use 1.72x 10-8 sm for the resistivity of copper.) 5.650x10-1 Ohm You are correct. Previous Tries For safety, the National Electrical Code limits the allowable amount of current which such a wire may carry. When used in indoor wiring, the limit is 6.0 A for rubber insulated wire of that size. How much power would be dissipated...
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