Test 3 PHS101 oc chapters 22,23 and 24 Student Name_____________________________

Question

Test 3 PHS101 oc chapters 22,23 and 24

Student Name___________________________________

Answer all the questions with full explanations for your answer to each question

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

1) Two charged particles repel each other with a force F. If the charge of one of the particles is doubled and the distance between them is also doubled, then the force will be          1) _______

A) F/2.

B) F/4.

C) 2 F.

D) F.

E) none of the above

2) Two charged particles repel each other with a force F. If the charge of both particles is tripled and the distance between them is also tripled, then the force will be             2) _______

A) F/4.

B) 2 F.

C) F/2.

D) F.

E) none of the above

3) Two charged particles held a certain distance apart are released. As they move, the force on each particle increases. Therefore, their charges have       3) _______

A) the same mass.

B) the same sign.

C) the same size.

D) opposite signs.

E) need more information

4) A balloon will stick to a wooden wall if the balloon is charged 4) _______

A) positively.      B) negatively.      C) either of these               D) neither of these

5) The electrical force on a 2-C charge is 60 N. The electric field where the charge is located is          5) _______

A) 60 N/C.           B) 240 N/C.          C) 30 N/C.            D) 20 N/C.           E) 120 N/C.

6) The direction of an electric field is the direction of the force exerted on 6) _______

A) an electron.

B) a neutral test charge.

C) an atom.

D) a proton.

E) a molecule.

7) During a lightning strike you don't want to be inside a building framed with     7) _______

A) steel.                B) aluminum.     C) iron. D) wood.

8) Imagine a single charge q placed at one corner of a square, and that the electric field at the center of the square is F/q. If two other equal charges are placed at the adjacent corners of the square (leaving the opposite corner "blank"), the electric field at the center of the square is                8) _______

A) F/(4q).

B) 4F/q.

C) F/(2q).

D) F/q.

E) none of the above

9) If 10 J of work is used in pushing 1 C of charge into an electric field, its electric potential relative to its starting position is            9) _______

A) 10 V. B) less than 10 V.

C) more then 10 V.           D) none of the above

10) An electron is pushed into an electric field where it acquires a 1-V electrical potential. If two electrons are pushed the same distance into the same electric field, the electrical potential of the two electrons is               10) ______

A) 1 V.   B) 4 V.   C) 0.5 V.                D) 0.25 V.             E) 2 V.

11) A coulomb of charge flowing in a bulb filament powered by a 6-volt battery is provided with 11) ______

A) 6 joules.

B) 6 newtons.

C) 6 ohms.

D) 6 amperes.

E) 6 w

Explanation / Answer

1) F = k (2q1) q2/ (2r)2 = F/2 Option (A)

2) F = k (3q1) (3 q2) / (3r)2 = F Option (D)

3) opposite sign Option (D)

4) either of these Option (C)

According to Chegg guidelines I can answer these many sub parts in a question, so please post other parts in a separate question.

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