Differentiate the Coulomb's law from Newton's Law of universal gravitation.
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Transcribed Image Text:6. (TRUE OR FALSE)
Electrostatic attraction or repulsion is impossible when one of the two interacting objects has no
charge.
7. Metal sphere A has a net charge of 6.0 C. It is brought in contact with an neutral metal sphere B
and then separated. Find the final charges A and B if (a) the spheres have equal radius and (b) if
the radius of sphere B is twice the radius of sphere A.
8. Spheres A, B and C have charges of 8.0 C, 12.0 C, AND -5.0 C respectively. The three spheres are
allowed to touch each other simultaneously and then separated. (a) What is the total charge on
the spheres before and after touching each other? (b) What is the final charge on each spheres
assuming they are identical?
9. What is the electric field between two parallel metal plates separated by 2.5 cm with a potential
difference of 3000V?
10. (TRUE OR FALSE)
Potential difference is the work done in moving a unit positive unit test charge from a point to
another in an electric field.
11. (TRUE OR FALSE)
Electric potential energy is the energy needed to move a charge.
12. Differentiate the Coulomb's law from Newton's Law of universal gravitation.
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