Purchase Solution

Light, Frequency, Voltage and Current

Not what you're looking for?

Ask Custom Question

1. Which is a correct statement?

A. Visible light has a frequency of 10 to the power of 14 Hz.

B. Gamma rays have a frequency of 60 Hz.

C. A microwave oven produces EMG of approximately 10 to the power of 9 Hz.

D. High voltage electric power lines produce EMF of 80 Hz.

2. An office worker wants to plug in a 3000 watt 110 Volt heater into a standard 15 amp, 110 V electrical outlet. Would this be safe?

A. No, the resistance can be hazardous and cause fire

B. No, the current required by the heater is approx. 27 amps which exceeds.

C. Yes, the voltage is too low.

D. Yes, the current required by the heater is only 7 amps, which can be handled.

Purchase this Solution
Solution Summary

The expert gives frequencies of various types of light. An explanation of how to calculate current from power and voltage is provided.

Solution Preview

Questions
1. Which is a correct statement?

A. Visible light has a frequency of 10 to the power of 14 Hz.

B. Gamma rays have a frequency of 60 Hz.

C. A microwave oven produces EMG of approximately 10 to the power of 9 Hz.

D. High voltage electric power lines produce EMF of 80 Hz.

This site has a ...

Purchase this Solution
Free BrainMass Quizzes
Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

Basic Physics

This quiz will test your knowledge about basic Physics.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

The Moon

Test your knowledge of moon phases and movement.

View More Free Quizzes
Related BrainMass Solutions

  • Radio Frequency Discharge versus Dielectric Barrier Discharge

    To excite the excimer gas, radio-frequency waves are used in the RFD concept, while a voltage (generating current) is typically applied in the DBD concept.

  • Voltage in Different Countries

    Light bulbs are rated according to their power consumption (40W, 100W etc) Now, the power consumption is a function of both the current and the voltage: P=IV But according to Ohms law: I=V/R Then: P=V/(R^2) Since the voltage is

  • This discussion provides an understanding of the difference between a Radio Frequency Discharge and Dielectric Barrier Discharge in an excimer lamp

    To excite the excimer gas, radio-frequency waves are used in the RFD concept, while a voltage (generating current) is typically applied in the DBD concept.

  • 25 Multiple-choice : Alternating current and EM waves.

    84482 25 Multiple choice questions based on alternating current and EM waves. (See attached file for full problem description) --- 1. The current in a certain ac circuit is independent of the frequency at a given voltage.

  • Physics: Electricity and Magnetism; Properties of Light

    Solution 22: Since wavelength is inversely proportional to frequency, waves with shorter wavelengths will have higher frequency. Thus, light from an argon laser of wavelength of 151 nm will emit higher frequency light.

  • application of Ohm's law

    A 20 ohm resistor and a 30 ohm resistor are wired in parallel and connected to a 9.0-V battery. How much current is drawn from the battery? 18. Three resistors, 10, 20, and 30 ohms, are wired in series and connected to a 120-V battery.

  • Frequency: A Conceptual Question

    In fact, the intensity of a bulb's light rises and falls with time due to the alternating current used in household circuits. If you could perceive these oscillations, would you see the light attain maximum brightness 60 or 120 times per second?"

  • AC-LCR Circuits: Inductance, Capacitance and Frequency

    The phase difference between the voltage and current is given by tan = Now from this we get the idea that the impedance Z depends on the frequency and hence the maximum current changes with the frequency.

  • NMOS FET and BJT analysis

    In this case, the NPN transistor acts as a switch that acts like a short when a high enough positive voltage is applied at its base, providing a high current through the LED, and acts like an open circuit when the applied voltage at its base is zero,

View More Related Solutions