Understanding Electric Charges and Fields
Delve into the world of electric charges and fields with explanations on determining charge of particles, effects of electric fields, and interactions between charged particles. Explore concepts such as field lines, induced electric fields, and particle movements in response to different charges.
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Presentation Transcript
Determine the charge of the unknown particle depicted in the figure. A. Positive B. Negative C. It can t happen! 0% 0% 0% Positive Negative It can t happen!
The magnitude of an electric field due to a point charge q at a distance r away depends on the strength of the charge of a test particle 50% 50% A. True B. False True False
Positively charged objects transfer positive charge to the earth when grounded. A. True B. False 0% 0% True False
The magnitude of an electric field is measured in SI units A. C B. N C. C/N D. N/C E. V F. A 0% 0% 0% 0% 0% 0% V C A N N/C C/N
A particle with no charge does not feel the effects of an electric field. A. True B. False 0% 0% True False
The charged particle in the middle experiences a force to the right. The particle has a _____ charge. A. Negative B. Positive C. It can t be done! 0% 0% 0% Positive Negative It can t be done!
Field lines always point ______ positive charges and _____ negative charges. A. towards, away from B. away from, towards C. away from, away from D. towards, towards 0% 0% 0% 0% towards, towards towards, away from away from, towards away from, away from
The electric field induced by the +4nC and -5nC particle at the location of the middle particle points A. left to right. B. right to left. C. up to down. D. down to up. E. not enough info! 0% 0% 0% 0% 0% down to up. up to down. left to right. right to left. not enough info!
Initially at rest, in what direction will the -5nC particle start moving? A. B. C. D. E. F. G. To the left To the right Up to the right Up to the left Upwards Downwards It wont, the forces from each +10 nC particle cancel. 0% 0% 0% 0% 0% 0% 0% Upwards It wont, the forces from ... Downwards To the left To the right Up to the left Up to the right
When a charged particle moves in an electric field, its path follows a field line. A. True B. False 0% 0% True False
From the electric field line diagram to the right, we can conclude that the charges of q1, q2, and q3are A. equal in magnitude and sign. B. equal in sign only. C. equal in magnitude only. 0% 0% 0% equal in sign only. equal in magnitude only. equal in magnitude and s...
From the electric field line diagram to the right, we can conclude that the signs of charges q1, q2, and q3 are A. q1(+), q2(+), and q3(+) B. q1(+), q2(+), and q3(-) C. q1(+), q2(-), and q3(+) D. q1(+), q2(-), and q3(-) E. q1(-), q2(+), and q3(+) F. q1(-), q2(+), and q3(-) G. q1(-), q2(-), and q3(+) H. q1(-), q2(-), and q3(-) 0% 0% 0% 0% 0% 0% 0% 0% q1 (+), q2 (+), and q3 (+) q1 (+), q2 (+), and q3 (-) q1 (+), q2 (-), and q3 (+) q1 (-), q2 (+), and q3 (+) q1 (+), q2 (-), and q3 (-) q1 (-), q2 (+), and q3 (-) q1 (-), q2 (-), and q3 (+) q1 (-), q2 (-), and q3 (-)
