Electrostatic

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SPEED TEST
1. D
The Styrofoam balls will be charged with the same charges as the rod and each other
2. B
Only negative charges can move
3. B
A: electric
C: magnetic
D: magnetic
4. A
An earthed object will allow excess charges to flow away to earth and leave the object uncharged.
5. C
R: charges in the sphere that has the same charges as those in the rod are repelled away from the rod.
P: the repelled charged flows away from the sphere through the earth link.
Q: no more charges can flow to or from the sphere
S: the charges in the sphere are spread evenly
6. B
Field lines of like charges will push away from each other.
7. C
Like charges repel

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