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Electric Circuits
when an iron wire and a carbon rod, each having the same 10 ohm resistance at 25 deg.celcius, are cooled from that temperature to -80 deg.celcius, find the ratio of the resistance of the carbon rod to the resistance of the iron wire at the lower temperature?
Electric Circuits
A copper conductor with square cross-section,1.0mm on a side,carries a constant current of 15A to a 3hp electric motor. The density of the free electrons is 8x10^28 electrons per cubic meter.find (a) current density (b) drift speed (c) electric field (d) the potential difference between 100m apart. (e) the resistance of a100m length of this copper conductor (f) suppose the resistance at (e) is at temperature 25 degrees celcius,find the resistance at 0 degrees celcuis and 100 deg.celcuis.
Electric Circuits
Light a wave length 5893A is incident on a metallic surface. The stopping potential for the emitted angstrom is 0.48v.
Calculate the maximum energy of the photoelectron, the work function and the threshold frequency. take h =6.625*10-34/se=1.6*10-19c
Calculate the maximum energy of the photoelectron, the work function and the threshold frequency. take h =6.625*10-34/se=1.6*10-19c
Electric Circuits
How much power is required to charge a battery if 840 Joules of power are transferred in 2.0 minutes?
Electric Circuits
Ultrasound Technician Career Worksheet In complete sentences, answer each question. Each question is worth 6 points, for a total assignment point value of 60 points. What technology or research is involved with this career? Describe how this technology or research involves electromagnetic or sound waves. Describe the properties of waves that make the technology possible. If you have chosen a research career, what topics are the researchers interested in learning more about? What information does this technology or research provide that is a benefit to individuals and society? What type of specialized training is necessary to learn the skills needed to work in this career field? How is this career a good fit for you or an individual who would work in this field. Describe your work environment in this career field. What are three advantages of working in this type of career? What are three disadvantages in working in this type of career?
Electric Circuits
Draw the connection of series parallel seriesparallel combination of capacitor
Electric Circuits
A refrigerator is equipped with an electric motor that draws 100W but operates only 25% of the time. What is the cost of operating the refrigerator for 30 days if the electricity cost $0.080/kWh?
Electric Circuits
A current of 10 Ampere exist in a line of 0.15 ohms resistance compute the rate of production of thermal energy in watts
Electric Circuits
Capacitor having a capacitive reactance of 26ohm and wavelength of 50m is used in a ssystem then find the following
Frequency
Capacitor
Frequency
Capacitor
Electric Circuits
When a battery is connected to a 103.0-Ω resistor, the current is 3.05 A. When the same battery is connected to a 400.0-Ω resistor, the current is 0.798 A. Find the internal resistance of the battery.
