The resistances of most substances increase when they are heated. A bulb for a flashlight using...
The resistances of most substances increase when they are heated. A bulb for a flashlight using 3.0 V has a resistance of 2.0 ohms when cold and 24 ohms when hot. Calculate the current (Amps) through the bulb when (a) cold and (b) hot. Claculate the power consumed when (c) cold and (d) hot.
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The resistances of most substances increase when they are
heated. A bulb for a flashlight using...
The hot resistance of a flashlight bulb is 1.80 12, and it is run by a...
The hot resistance of a flashlight bulb is 1.80 12, and it is run by a 1.48-V alkaline cell having a 0.100-12 internal resistance. (a) What current flows? x Enter a number. tal resistance of the circuit? Did you consider using Ohm's law? A (b) Calculate the power supplied to the bulb. W
What power is dissipated by the bulb of a flashlight when its hot resistance is 2.200E...
What power is dissipated by the bulb of a flashlight when its hot resistance is 2.200E + O and voltage is 9.700E + 0-V? Answer to 3SigFigs with units. .227*A
The figure below shows a circuit consisting of a flashlight bulb, rated 3.0 V and 1.5...
The figure below shows a circuit consisting of a flashlight bulb, rated 3.0 V and 1.5 W. Assume the wires are ideal and have no resistance. The right wire of the circuit, the rod, is 12 cm long and is pulled at constant speed v through a perpendicular magnetic field of strength 0.25T (directed into the page). What current has to flow through the bulb for it to shine at the full brightness? What speed must the moving rod have...
A typical small flashlight contains two batteries, each having an emf of 1.50 V connected in...
A typical small flashlight contains two batteries, each having an emf of 1.50 V connected in series with a bulb having a resistance of 18 Ω . A. If the internal resistance of the batteries is negligible, what power is delivered to the bulb? P = B. If the batteries last for a time of 4.1 h , what is the total energy delivered to the bulb? W = C. The resistance of real batteries increases as they run down....
(6.9) A typical small flashlight contains two batteries, each having an emf of 1.50 V connected...
(6.9) A typical small flashlight contains two batteries, each having an emf of 1.50 V connected in series with a bulb having a resistance of 18 Ω A) If the internal resistance of the batteries is negligible, what power is delivered to the bulb? B) If the batteries last for a time of 6.0 h , what is the total energy delivered to the bulb? C) The resistance of real batteries increases as they run down. If the initial internal...
SERIES AND INTERNAL RESISTANCE SECTION PAGE BULB V DATA AND ANALYSIS: PART I Emf, Resistance and...
SERIES AND INTERNAL RESISTANCE SECTION PAGE BULB V DATA AND ANALYSIS: PART I Emf, Resistance and Power 1. Record all measurements in the table below. CELL Em POTENTIAL DIFFERENCES CURRENT AND VR 1 NO. ) Total Voltage) (vi) ( 12 ) Amiр 1 1101 5.6 V aha 5.3 V 2.25 V 0.018 Amp 2 2300 2001 5.6 V 5.0 V 3.5 V 3.0 V 0.007 Amp 2. Calculate the internal resistance of the cells using Equation 1. Trial 1 |...
please answer all questions with clear work A flashlight bulb draws 2.5 amps when connected to...
please answer all questions with clear work
A flashlight bulb draws 2.5 amps when connected to two C cells (3 volts). What is the power dissipated in the bu lb? View Available Hint(s 3.6 W O 3W O 7.5 W O None of the above. Request Answer Submit One billion electrons pass a certain point in a microsecond. This corresponds to a current of View Available Hint(s) O None of the listed responses is correct 0.00016 A 0.00000016 A O1x1015...
The battery is charged during the day to keep the bulb string lights shining at night. The solar ...
In this tutorial you will analyse a solar powered Christmas tree. The tree has a solar panel at the top, a battery at the base, and bulb string lights around it. The bulb string lights are made from 4 parallel strings with 8 light bulbs in series each. Each light bulb has a nominal resistance of 8 2. The resistance of the wiring is negligible. The battery is charged during the day to keep the bulb string lights shining at...
5. A three-way lamp has four switch positions: off, low, medium, and high brightness settings when...
5. A three-way lamp has four switch positions: off, low, medium, and high brightness settings when used with a working three-way light bulb. Such a bulb has only two filaments; when connected to 120-V household circuit one filament dissipates 60W of power while the other filament dissipates 120W. (a) Calculate the resistances of the two separate filaments. b) Explain how current must flow through the bulb to dissipate 180W at the fourth switch position. c) The most common way for...
A 12-volt battery is connected to two light bulbs, as drawn in Figure 1. Light bulb...
A 12-volt battery is connected to two light bulbs, as drawn in
Figure 1. Light bulb 1 has resistance 3 ohms, while light bulb 2
has resistance 6 ohms. The battery has essentially no internal
resistance, and all the wires are essentially resistanceless,
too.
When a light bulb is unscrewed, no current flows through that
branch of the circuit. For instance, if light bulb 2 is unscrewed,
current flows only around the lower loop of the circuit, which
consists of...
The hot resistance of a flashlight bulb is 1.80 12, and it is run by a 1.48-V alkaline cell having a 0.100-12 internal resistance. (a) What current flows? x Enter a number. tal resistance of the circuit? Did you consider using Ohm's law? A (b) Calculate the power supplied to the bulb. W
What power is dissipated by the bulb of a flashlight when its hot resistance is 2.200E + O and voltage is 9.700E + 0-V? Answer to 3SigFigs with units. .227*A
The figure below shows a circuit consisting of a flashlight bulb, rated 3.0 V and 1.5 W. Assume the wires are ideal and have no resistance. The right wire of the circuit, the rod, is 12 cm long and is pulled at constant speed v through a perpendicular magnetic field of strength 0.25T (directed into the page). What current has to flow through the bulb for it to shine at the full brightness? What speed must the moving rod have...
SERIES AND INTERNAL RESISTANCE SECTION PAGE BULB V DATA AND ANALYSIS: PART I Emf, Resistance and Power 1. Record all measurements in the table below. CELL Em POTENTIAL DIFFERENCES CURRENT AND VR 1 NO. ) Total Voltage) (vi) ( 12 ) Amiр 1 1101 5.6 V aha 5.3 V 2.25 V 0.018 Amp 2 2300 2001 5.6 V 5.0 V 3.5 V 3.0 V 0.007 Amp 2. Calculate the internal resistance of the cells using Equation 1. Trial 1 |...
please answer all questions with clear work
A flashlight bulb draws 2.5 amps when connected to two C cells (3 volts). What is the power dissipated in the bu lb? View Available Hint(s 3.6 W O 3W O 7.5 W O None of the above. Request Answer Submit One billion electrons pass a certain point in a microsecond. This corresponds to a current of View Available Hint(s) O None of the listed responses is correct 0.00016 A 0.00000016 A O1x1015...
In this tutorial you will analyse a solar powered Christmas tree. The tree has a solar panel at the top, a battery at the base, and bulb string lights around it. The bulb string lights are made from 4 parallel strings with 8 light bulbs in series each. Each light bulb has a nominal resistance of 8 2. The resistance of the wiring is negligible. The battery is charged during the day to keep the bulb string lights shining at...
5. A three-way lamp has four switch positions: off, low, medium, and high brightness settings when used with a working three-way light bulb. Such a bulb has only two filaments; when connected to 120-V household circuit one filament dissipates 60W of power while the other filament dissipates 120W. (a) Calculate the resistances of the two separate filaments. b) Explain how current must flow through the bulb to dissipate 180W at the fourth switch position. c) The most common way for...
A 12-volt battery is connected to two light bulbs, as drawn in
Figure 1. Light bulb 1 has resistance 3 ohms, while light bulb 2
has resistance 6 ohms. The battery has essentially no internal
resistance, and all the wires are essentially resistanceless,
too.
When a light bulb is unscrewed, no current flows through that
branch of the circuit. For instance, if light bulb 2 is unscrewed,
current flows only around the lower loop of the circuit, which
consists of...
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