Physics Current Electricity Level: Misc Level
(a). How much charge is on each plate of a 4.00 - uF capacitor when it is connect to a 12. V battery (b) If this same capacitor is connected to a 1.50 V battery, what charge is stored?
Physics Current Electricity Level: Misc Level
A 1- megabit computer memory chip contains many 60.0 x 10 -15 F Capacitors. Each capacitor has a plate area of 21.0 x 10 - 12 m 2. Determine the plate separation of such a capacitor ( assume parallel plate configuration) The diamater of an atom is on the order of 10-10 m =1 A. Express the plate separation in angstroms.
Physics Current Electricity Level: Misc Level
Can a particle ever move from a region of low electric potential to one of high potential and yet have its electric potential energy decrease? Explain.
Physics Current Electricity Level: Misc Level
State clearly the difference between : a) electric potential and electric field. b) electric potential and electric potential energy.
Physics Current Electricity Level: Misc Level
An L R C circuit has L = 27.1 m H and R =8.50?.
a. What value must C have to produce resonnance at 4.00 E3 Hz?
b. What will be the maximum current at resonance if the peak external voltage is 1.8 E 2 V?
Physics Current Electricity Level: Misc Level
What is the resistance of a coil if its impedance is 335 ? and its reactance is 145 ??
Physics Current Electricity Level: Misc Level
A 2.5- k ? resistor and a 2.7- ? F capacitor are connected in series to an ac source.
a. Calculate the impedance of the circuit if the source frequency is 6.0 E 1 Hz
b.Calculate the impedance of the circuit if the source frequency is 6.0 E 4 H z..
Physics Current Electricity Level: Misc Level
A 1.20 E 2- m H radio coil is connected to a 2.40 E 2- V ( r m s ) 12.0- k H z ac line. Ignore resistance.
a. Calculate the reactance of the radio coil.
b.Calculate the rms current in the radio coil.
Physics Current Electricity Level: Misc Level
At what frequency will a 13.0 mH inductor have a reactance of 6.5 E 2 ?
Physics Current Electricity Level: Misc Level
What is the inductance of a coil produces an emf of 2.60 V when the current in it changes from -31.0 m A to + 25.0 m A in 10.0 m s ?
Physics Current Electricity Level: Misc Level
Wire A has a potential difference of 50 V across it and carries a current of 2 A. Wire B has a potential difference of 100 V across it and also carries a current of 2 A. Compare the resistances, rates of flow of charge, and rates of flow of energy in the two wires.
Physics Current Electricity Level: Misc Level
A 120 -V electric coffeepot draws a current of 0.6 A. What is the resistance of its heating element?
Physics Current Electricity Level: Misc Level
How is the movement of electricity through air different from its movement through a copper wire?
Physics Current Electricity Level: Misc Level
Electricity was once thought to be a weightless fluid, an excess of which was" positive"and a deficiency of which was "negative".What phenomena can this hypothesis still explain ? What phenomena can it not explain?
Physics Current Electricity Level: Misc Level
A 2.5 ohm resistor is connected to a 2.2 volt battery. How much current will flow through the resistor?
