lirite yowr aSS SA &, C. D, E Fetc on the answer page in the appropriate bank ER

Question

lirite yowr aSS SA &, C. D, E Fetc on the answer page in the appropriate bank ERSNES NOT recorded on the answer sheet will NOT be counted form for the equation used to calculated the electric potential of a point charge at a distance r The proper .rosn the point charge is? Hint: Consider the units an electric potential must have. 2. For three resistors connected in parallel, the equivalent resistance is- A) always larger than the largest of the three resistances. B) always smaller than the smallest of the three resistances. C) equal to the sum of the three resistances. D) Both A and C. 3. An proton resides in an electric field that keeps it suspended 2 meters above the ground. What is the direction of the field? A) upward B)eft C)) right D) downward Which of the following is materials is widely used in making semiconducting devices? A) copper B) glass C) iron D) rubber E) silicon The numerical value of 1/(40) is equivalent to whose constant? A) Coulomb For a constant resistance, which of the following is Ohm's Law, R 5. B) Einstein C) FaradayD) Kirchhoff E) Maxwell F) Ohm 6. ? 7. A matcrial which has no resistance (usually at a very cold temperature) is known as a(n) A) ideal insulator B)superconductor C) perfect resistor leaving thejunction.”-is associated with which individual? A) Ampere B) Coulomb C) Einstein D) Faraday D) semiconductor 8. The statement that. "The sum of the currents entering a junction is equal to the sum of the currents E) Kirchhoff F) Ohm

Explanation / Answer

1. D) kq/r

2. B) Always smaller than the smallest of the three resistors.

In parallel connection, resistance degreases.

3. A) upward

Direction of the field is same as the direction of force. Since it is suspended above the ground, force has to be upward. So the field direction is upward.

4. E) silicon

5. A) Coulomb

6. B) V/I

7. B) superconductor

8. E) Kirchhoff

The statement is Kirchhoff's Junction Law.

Hope this helps :)

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