What power is dissipated by the bulb of a flashlight when its hot resistance is 2.200E...
What current (in A) flows through the bulb of a 3.20 V flashlight when its hot resistance is 3.75 Ω?
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
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.
When a resistor with resistance R is connected to a 1.50-V flashlight battery, the resistor consumes 0.0425 W of electrical power. (Throughout, assume that each battery has negligible internal resistance.) Part A What power does the resistor consume if it is connected to a 12.6-V car battery? Assume that R remains constant when the power consumption changes. Express your answer with the appropriate units. P P = nothingnothing SubmitRequest Answer Part B The resistor is connected to a battery and...
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.
4. A flashlight uses two D cell 1.5 V batteries connected in serles to provide 3 volts cross ue ig bulb. The bulb draws 380 mA when turned on a. Calculate the resistance of the bulb b. Calculate the power dissipated c. If this flashlight was plugged into a wall (rather than using batteries) and we could keep the voltage and power the same. How much money would it cost to run the flashlight for one month (30 days) for...
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))
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
any help with the mathcab part? After t 0, the current entering the positive terminal of a flashlight bulb is given by i(t) 2(1-e) (A) and the voltage across the bulb is v(t) 12e-4 (V) . a. Determine the instantaneous power delivered to the flashlight. b. Determine the maximum power level delivered to the flashlight. (S Points it should be done with Mathcad. Determine A if Vout/Vs 9 in the circuit of following figure. 3Ω A1 36 Vout 12 Ω...