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Electric Circuits
Define 1 joule of work done.
Electric Circuits
How long does it take a current of 0.5mA to deliver 15C of charge?
Electric Circuits
an electric heater of resistance 8 ohm draws 15A current from the service mains 2 hours.Calculate the rate at which heat is developed in the heater.
Electric Circuits
An electron accelerated through 30-kV, in a cathode ray oscilloscope, enters a system of deflecting plates. The deflecting field between the plates is 24 kV m−1. The length of the deflecting plates is 0.06 m and the total deflection produced in the path of the electron on a screen is 9 mm.
What is the distance of the screen from the near end of the plates? Will the formula V=E.dr be used in this question?
What is the distance of the screen from the near end of the plates? Will the formula V=E.dr be used in this question?
Electric Circuits
when plotting a parallel plate electric field why should use low voltage supply and Carbonized Acetate Sheets as electrode? Isnt extra high tension power supply will produce a strong field and metal electrode will be better conductor? Thanks
Electric Circuits
In plotting a parallel plat electric pattern, why the type of power supply use should be low voltage supply and the type of electrode use is Carbonized Acetate Sheets ? Isnt it that extra high tension will produce a stronger field and a metal electrode is a better conductor?
Electric Circuits
If a force of 80N extends a spring of natural length 8m by 0.4m what will be the length of the spring when the applied force is 100N
Electric Circuits
A battery charger supplies 10 A to charge a storage battery which has an open - circuit voltage of 5.6V. If the voltmeter connected across the charger reads 6.8V, what is the internal resistance of the battery at this time?
a. 13Ω
b. 052Ω
c. 012Ω
d. 21Ω
a. 13Ω
b. 052Ω
c. 012Ω
d. 21Ω
Electric Circuits
The current I in a conductor as a function of time t is given as I(t)=5t2−3t+10 where current is in ampres (A) and t is in seconds (s). What quantity of charge moves across a section through the conductor during the interval t=2s to t=5s ?
a. 154.4C
b. 193.5C
c. 225.5C
d. 300.0C
a. 154.4C
b. 193.5C
c. 225.5C
d. 300.0C
Electric Circuits
A coil of wire has a resistance of 250Ω at 20 degrees Celsius and a resistance of 251Ω at 35 degrees Celsius. What is its temperature coefficient of of resistance?
a. 45×10^−4/degrees Celsius
b. $35×10^−3/degrees Celsius
c. 26×10^−4/degrees Celsius
d. 40×10^−5/degrees Celsius
a. 45×10^−4/degrees Celsius
b. $35×10^−3/degrees Celsius
c. 26×10^−4/degrees Celsius
d. 40×10^−5/degrees Celsius
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#331389 on Nov 2022
#331389 on Nov 2022