These are all True and False Questions They Will Be Divided Into 3 Different Sec

Question

These are all True and False Questions They Will Be Divided Into 3 Different Sections 1. (True or False Questions) Dealing with Electrical Charge : A) If a rubber rod is charged by rubbing it with some unknown material, the net charge on both objects combined after the charging process must be constant. B) If the charged rod from question (A) is brought near a neutral pith ball, the pith ball is ALWAYS going to be attracted regardless of the polarity of the net charge on the rod. C) If the charged rubber rod is brought near first and then moved away from the pith ball without touching the ball with anything, the pith ball acquires a NET charge. D) If an electroscope is charged and then grounded by touching it, the leaves will ALWAYS come closer. E) If a NEGATIVELY charged object is used to charge a second neutral object, the second object will ALWAYS be POSITIVELY charged. 2. (True or False) Dealing with Coulombs Law and Electric Field: A). If the amount of charge on each of the two point charges is doubled and the distance between them is also doubled, then the coulomb force between them is UNCHANGED. B) If the magnitude of an electric field is E at a distance d from point change, then its magnitude will be tripled at a distance d/3 from the same point charge. C) The strength of an electric field at a point increases if a TEST charge is brought to that point. D) The net flux through a closed surface is directly proportional to the amount of charged enclosed by the surface. E) The electric field inside a conductor due to a charge Q at the corner of the cavity inside the conductor is ALWAYS ZERO under electrostatic equilibrium. 3. (True or False) Dealing with Conductor in Electrostatic Equilibrium: Now Imagine a solid conductor of an arbitrary shape with a charge at the center of a cavity inside it. Assume an electrostatic equilibrium is reached to answer following questions. A) The electric field inside the substance of the conductor MUST be ZERO. B) The net electric charge on the outer surface of the conductor is the same as the charge at the center of the cavity BOTH in magnitude and polarity. C) The potential inside the substance and on the outer surface of the conductor MUST be equal to ZERO. D) If the conductor is placed in an external electric field and the charge inside the cavity is removed, the net electric field inside the cavity is the same as the external electric field. E) If a hydrogen atom, 1 electron and 1 proton, is trapped at the center of the cavity and the conductor is placed inside a box, the net electric flux through the surface of the box MUST be ZERO.

Explanation / Answer

1.A. true

B. FASLE

C.TRUE

D. TRUE

E. TRUE

2. A. TRUE

B. FALSE

C. TRUE

D. TRUE

3. A. TRUE

B. TRUE

C. TRUE

D. TRUE

E. TRUE

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