URGENT!!!!!!!!!!!!!!!!!!
A standard American 100-Watt lightbulb is rated for the power it dissipates when connected to a US-style 110-V wall outlet. What is the resistance of such a lightbulb measured in ohms?
Power P = V2 / R
so, R = V2 / P
Resistance in ohms = Voltage 2 / Power = 1102
/ 100 = 12100 / 100 = 121 ohms
URGENT!!!!!!!!!!!!!!!!!! A standard American 100-Watt lightbulb is rated for the power it dissipates when connected to...
A typical lightbulb in your residence is rated 75 W, which means that the bulb dissipates 75 W when connected to a DC voltage of 110 V. (a) What is the current? A (b) If the voltage is reduced to 74 V, what is the dissipated power? Assume the resistance does not change when the voltage is reduced. W
A "120-watt" lightbulb uses an average power of 120 W when connected to an rms voltage of 120 V. What is the resistance of the lightbulb? What is the maximum current in the bulb? What is the maximum power used by the bulb at any given instant of time?
A typical lightbulb in your house is rated 150 W, which means that the bulb dissipates 150 W when connected to a DC voltage of 115 V. (a) What is the current through the lightbulb? (b) If the voltage is reduced to 40 V, what is the dissipated power?
An incandescent lightbulb is rated at 100 Watts when plugged into a 110 V-rms household outlet. Calculate the resistance of the filament and the rms current. a. 12.2 Ohm, 0.9A (rms) b. 10 Ohm, 1A (rms) c. 110 Ohm, 1A (rms) d. 122 Ohm, 0.9 A (rms) e. 11 Ohm, 1.1 A (rms)
Question 5 1 points Save Answer What if you took a bulb rated to produce 100-Watts in a 220-V outlet and plugged it into a 110-V outlet? What is the resistance of such a bulb? Report your answer in ohms.
Lightbulb A is rated at 120 V and 100 W for household applications. Lightbulb B is rated at 12 V and 100 W for automotive applications. Part A What is the current through each bulb? Express your answer using two significant figures. Enter your answers numerically separated by a comma. IVO AXO ? IA, IB = A Submit Request Answer Submit Part B What is the resistance of each bulb? Express your answer using two significant figures. Enter your answers...
Q26.4: The heating element of a hair dryer dissipates 1500 W when connected to a 150 V outlet. You may want to review (Pages 841 - 843) . What is its resistance? Express your answer to two significant figures and include the appropriate units.
A heater dissipates 1200 W of power when it is connected to a 190 V battery. What current will flow through the heater when it is connected to the battery? What is R, the resistance of the heater? How long does it take to raise the temperature of the air in a good-sized living room that is 5.00 m × 8.00 m × 10.0 m by 10.0∘C? Note that the specific heat of air is 1006 J/(kg⋅∘C) and the density of...
What is the resistance of a lightbulb that uses an average power of 70.0 W when connected to a 60.0 Hz power source having a maximum voltage of 150 V? ohm (b) what is the resistance of a 90 w bulb? ohm
Certain lightbulb is rated at 175.0 W when operating at an rms voltage of 20 V. What is the peak voltage applied across the bulb? _________ V What is the resistance of the bulb? ________ Ohm Does a 100-W bulb have greater or less resistance than a 175.0-W bulb? greater less Explain. __________ This answer has not been graded yet.