Question

A certain lightbulb is rated at 120.0 W when operating at an rms voltage of 120...

A certain lightbulb is rated at 120.0 W when operating at an rms voltage of 120 V.
(a) What is the peak voltage applied across the bulb?
V

(b) What is the resistance of the bulb?
Ω

(c) Does a 100-W bulb have greater or less resistance than a 120.0-W bulb?
greater
less

Explain.

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1. A 60-W lightbulb is used in an American desk lamp. (In the United States, standard...
1. A 60-W lightbulb is used in an American desk lamp. (In the United States, standard rms voltage is 120 V.) (a) What is the average power dissipated by the filament? .................. W (b) What is the rms current in the filament? .................... A (c) What is the maximum current in the filament? ..................... A (d) What is the maximum power dissipated by the filament? ....................... W 2.The rms current in a 30.0-Ω resistor connected to an AC source is...
A 90 W lightbulb is designed to operate with an applied ac voltage of 130 V...
A 90 W lightbulb is designed to operate with an applied ac voltage of 130 V rms. The bulb is placed in series with an inductor L, and this series combination is then connected to a 50 Hz 200 V voltage source. Part A For the bulb to operate properly, determine the required value for L. Assume the bulb has resistance R and negligible inductance. Express your answer using two significant figures. L=........ H
- A certain waffle iron is rated at 1.22 kW when connected to a 120-V source....
- A certain waffle iron is rated at 1.22 kW when connected to a 120-V source. (a) What current does the waffle iron carry? (b) What is its resistance? - A well-insulated electric water heater warms 111 kg of water from 20.0° C to 55.0° C in 35.0 min. Find the resistance of its heating element, which is connected across a 240-V potential difference.
An ac generator with an rms voltage 120 V is and a frequency of 60 Hz...
An ac generator with an rms voltage 120 V is and a frequency of 60 Hz is connected with a 15 µF capacitor, and a 30 mH inductor and a resistor R.     What value must R have if the rms current in this circuit it to be 5 mA?       Calculate the rms voltage across the resistor.
A generator with rms voltage of rms = 120 V drives an RLC circuit at frequency...
A generator with rms voltage of rms = 120 V drives an RLC circuit at frequency f = 60 Hz. The load resistance R and reactance values of the inductor L and the capacitor C of the circuit are given by R = 50 , XL = 50 , XC = 150 , respectively What is the impedance of the circuit? What is the peak current amplitude in the circuit? What is the phase angle  of the circuit? The...
A common flashlight bulb is rated at 0.300 A and 2.80 V (the values of the...
A common flashlight bulb is rated at 0.300 A and 2.80 V (the values of the current and voltage under operating conditions). If the resistance of the bulb filament at room temperature (20°C) is 2.60 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 0.44 A and 2.8 V (the values of the...
A common flashlight bulb is rated at 0.44 A and 2.8 V (the values of the current and voltage under operating conditions). If the resistance of the bulb filament at room temperature (20°C) is 1.2 Ω, what is the temperature of the filament when the bulb is on? The temperature coefficient of resistivity is 4.4 × 10-3 K-1 for the filament material.
You bought all your stuff in the US which uses a 120-V AC system at a...
You bought all your stuff in the US which uses a 120-V AC system at a frequency of 60 Hz. You decide to move to Europe for a while which operates on 240-V AC at a frequency of 50 Hz. You decide to bring all your stuff with you and try to hook it up to the electrical system in your new place in Europe. (120-V and 240-V refer to the RMS voltage in these regions) (a) If you have...
1.An AC generator supplies an rms voltage of 220 V at 60.0 Hz. It is connected...
1.An AC generator supplies an rms voltage of 220 V at 60.0 Hz. It is connected in series with a 0.750 H inductor, a 3.50 μF capacitor and a 211 Ω resistor. What is the impedance of the circuit? You have to calculate the impedance for a series RLC-combination. 2. What is the rms current through the resistor? You can use a similar equation fo Ohm's law for an RLC circuit. 3. What is the average power dissipated in the...
A) When an alternating voltage of 200 V is applied across a device X, a current...
A) When an alternating voltage of 200 V is applied across a device X, a current of 0.4A flows through the circuit and is in phase with the applied voltage. When the same voltage is applied across another device Y, the same current again flows through the circuit, but it lags behind the applied voltage by π/2radians. Name the devices X and Y. Justify your answer.                                                                   b) A coil of inductance 0.50H and resistance 100 Ω is...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT