A three-cell flashlight draws a current of 0.60A. What is the operating resistance of the light bulb if each cell provides a potential of 1.0V when delivering this current?
here,
potential of each cell , V = 1 v
as there are three cell in series
Vnet = 3*V
vnet = 3 V
current , I = 0.6 A
the operating resistance of the light bulb , R = V/I
R = 3/0.6
R = 5 ohm
the operating resistance of the light bulb is 5 ohm
A three-cell flashlight draws a current of 0.60A. What is the operating resistance of the light...
A battery operating a large flashlight produces a current of 2 amperes in a light bulb that has a resistance of 4 ohms. The voltage of the battery is a. 0.5 volts. b. 2 volts. c. 8 volts. d. none of the above.
a.) A 75W light bulb draws a current of 0.80A. If the light bulb stays on for 3.0 hours, how much charge flows through the light bulb? b.) An ac generator produces a voltage given by V= 283 sin188t. What is the peak voltage? What is the frequency? If the voltage supplied by the generator produces a rms current of 2.0A in a device in the circuit, what is the resistance of the device?
What current flows through the bulb of a 3.00 V flashlight when it’s hot resistance is 3.60 ohms?
- 2. 5 c) A light bulb draws a current of 12A when connected to a 24-V battery. Find the bulb's resistance.
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
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...
A common flashlight bulb is rated at 0.30A0.30A and 2.9V2.9V (the values of the current and voltage under operating conditions). If the resistance of the tungsten bulb filament at room temperature (20°C)(20°C) is 1.3 ΩΩ, what is the temperature in degrees Celsius of the filament when the bulb is on?
3) Three batteries of Emf value E and internal resistance r are used to a light bulb of resistance R. They are attached in both of the following ways: Find the current across the light bulb for each arrangement. IfRT, which arrangement provides a larger current?
A 100-W light bulb draws a 1.2-A current. What is the voltage drop across the light bulb? Answer: V
What current (in A) flows through the bulb of a 3.20 V flashlight when its hot resistance is 3.75 Ω?