A common flashlight bulb is rated at 0.300 A and 2.90 V (the values of the current and voltage under operating conditions). If the resistance of the bulb filament at room temperature (20°C) is 1.10 Ω, what is the temperature of the filament, in degrees Celcius (degC), when the bulb is on? The filament is made of tungsten.
A common flashlight bulb is rated at 0.300 A and 2.90 V (the values of the...
use kirchoffs rule if applicable A common flashlight bulb is rated at 0.300 A and 2.90 V (the values of current and voltage under operating conditions). if the resistance of the bulbs tungsten filament at room temperature (20.0 degrees C) is 1.10( ), estimate the temperature of the tungsten Filament when the bulb is turned on. A common flashlight bulb is rated at 0.90 A and 2.90 V (the values of current and voltage under operating conditions). If the resistance...
A common flashlight bulb is rated at 0.300 A and 2.70 V (the values of the current and voltage under operating conditions). If the resistance of the tungsten bulb filament at room temperature (20°C) is 2.20 Ω, what is the temperature of the filament when the bulb is on? My answers of 706.86 C is incorrect 9 = 2.2 *(1 + 0.0045(T- 20))
A small bulb is rated at 7.50 W when operated at 125 V. The tungsten filament has a temperature coefficient of resistivity alpha = 4.50 times 10^-3/C degree. When the filament is hot and glowing, its temperature is seven times room temperature (20 C degree). What is the resistance of the filament (in ohms) at room temperature?
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.
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 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 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...
What current (in A) flows through the bulb of a 3.20 V flashlight when its hot resistance is 3.75 Ω?
(a) How much current flows in a 100 watt bulb when lit? Assume 120 volts and assume DC voltage. (b) What is the resistance of a 100 watt light bulb when lit? Assume 120 volts and a tungsten filament temperature of 1200° C when lit. (c) How much current flow in the bulb when it is first turned on and the temperature of the filament is 20° C? Use α-5.36 x 10-3 Co.1 for tungsten.
1) The circuit below consists of a flashlight bulb, rated 3.0 V and 1.5 Watts, ad ideal wires with no resistance. The right wire of the circuit is 10-cm long and pulled at constant speed v through a perpendicular magnetic field of strength 0.10 T. x x 1x x x x x x x x x x 10 cm *** * x x 0.10T x x x J* a) What speed must the wire have to light the bulb to...