- What is the electric field strength at the origin (x=0, y=0) produced by 2 e-s, one at x=.0001 m and the other at x=-.0001m, y=0
0 N/C
- 2 point slightly separate from one another forma an electric dipole. T/F
False
- A dipole is placed near to a point charge q. The net force on this dipole is zero because the dipole is neutral. T/F
False
- If a box contains equal numbers of point and e- the electric flux through this box will be zero only when the charges are distributed with spherical symmetry of its center. T/F
false (equal #pt an e- flux always=0)
- A thin wire 7.0 m long has a charge on 10nc. Find the magnitude of the electric field a distance of 2.0mm form the left end of the wire along the axis of the wire.
64*10^2 N/C
- An e- and point are released form rest in vacuum. As they move...
A negative potential energy becomes more negative.
- A device with R=200 kΩ connected to a 9V battery. How much power?
0.41mW p=IV=(v^2)/R
- 1uF capacitor is charged to a potential difference of 700V. If it is discharged through 400 kΩ resistance of a circuit, what is the voltage drop 7ms later?
688V V(t)=Ve^(-t/R)
- a 75w bulb and 100w bulb are connected in series across a 120v outlet, the 75w bolb will deposit 75W and the 100W bolb will deposit 100w of power. True or False?
False
- compass is placed close to a stationary charge. If the charge remains stationary, the compass will not deflect, but if moved it will deflect. True or false?
True
