Which of the following is TRUE about electric charge? .

 Which of the following is the least effective conductor?

 Which of the following is FALSE?

What is the direction of the electric field at the test point on the -x-axis, 50 cm from the  charge q = -5.00 nC which is located at the origin? 

An electron traveling horizontally from North to South enters a region where a uniform electric field is directed downward. What is the direction of the electric force exerted on the electron once it has entered the field?

. What is the electric field strength at a point 50 cm from a charge q = + 5.00 nC?

What is the magnitude of the net electric field at (+1.0 m, 0) due to the three charges in number 9? 

What is the energy per unit charge? 

The magnitude of electric potential is ______ at an infinite distance.

Which statements must be true about the surface of a charged conductor in which no charge is moving?

. Of the following quantities, which is vector in character?

A system of two charges has a positive potential energy. This closely indicates that

The electric potential due to several point charges is given by the equation: V = kΣqi / ri. The r indicates:

. A positive charge is located at the origin. As a test charge moves away from the charge, what will happen to the electric potential electric potential due to this charge?

 Which of the following statements are TRUE? I. When a positive charge moves in the direction of an electric field, the field does negative work and the potential energy increases. II. When a negative charge moves in the direction of an electric field, the field does negative work and the potential energy increases. III. When a negative charge moves in the direction of an electric field, the field does positive work and the potential energy decreases.D. D.

 How much work is done in moving a charge between two points on the same equipotential  surface? 

 A negative charge moves in the direction of a uniform electric field. What does this entail?      

 The unit Volt, V is the same as.

 As a proton moves in the direction the electric field lines...

A charge of 31μC moves from the positive to the negative terminal of a 9.0-V battery. How much energy does the battery impart to the charge?

Electric potential ____________ as distance increases.

Of the following quantities, the one that is not a scalar in character is

 A system of two charges has a negative potential energy. This signifies that

An electron & a proton are accelerated through the same potential difference

The electric potential energy due to several point charges is given by the equation: U = k Σ qi / r2 i. The r indicates:

 Which of the following statements are TRUE? I. When a positive charge moves in the direction of an electric field, the potential energy decreases and the field does positive work II. When a positive charge moves in the direction of an electric field, the potential energy increases and the field does negative work III. When a negative charge moves in the direction of an electric field, the potential energy increases and the field does negative work IV. When a negative charge moves in the direction of an electric field, the potential energy decreases and the field does positive work

 In terms of energy unit, which does not belong? A. B. C. D.

How is the direction of the electric field lines related to the equipotential surface?

 When moving from infinity to towards a negative point charge, the electric potential.

A point charge q = 2.00μC is located at the origin. Find the electric potential due to this charge at point x = 4.0 m.

 Two protons in the nucleus of a 238U atom are 6.0 fm (6.0x10-15m) apart. What is the potential energy (in joules) associated with the electric force that acts between these two particles? A. B.C.D.

Two point charges are arranged along the x-axis; q1=2.0 µC is at x=0.80m, and q2=2.0 µC at x=0.80m . The net electrical potential measured at the origin due to these point charges is

Two like charges of charge +10 nC are placed at the two corners of an equilateral triangle of side 3 cm. What is the magnitude of the total potential at the third corner?

What is the potential at point A?

14. What is the potential at point B?

What is the potential difference VA-VB?

It is the unit of capacitance.

 Which of the following refers to the function of a capacitor?

Capacitor stores which type of energy?

Why does capacitor block dc signal at steady state?

If a parallel plate capacitor of plate area 2 m2 and plate separation of 1 m stores the charge of 1.77 x 10-11 C, what is the voltage across the capacitor?

Which of the following is a passive device?

What is the value of capacitance of a capacitor which has a voltage of 4V and has 16C of charge?

Of which medium is capacitance high? A) B) C) D)

What is the voltage of a battery connected to a parallel plate capacitor with a plate area of 2.0 cm2 and a plate separation of 2 mm if the charge stored on the plates is 4.0 pC?

. A typical capacitor in a memory cell have a capacitance of 3 x 10-14 F. If the voltage across the capacitor is 0.5 V, what is the number of electrons that must move to the capacitor to charge it?

Capacitor stores which type of energy?

 Why does capacitor block dc signal at steady state?

Refer to the diagram in item number 5. What is the voltage across C4? A) B) C) D)

9. A potential difference of 100 mV exists between the outer and inner surfaces of a cell membrane. The inner surface is negative relative to the outer. How much work is required to move a sodium ion Na+ outside the cell from the interior? (Express your answer in electron volts. A singly-charged ion has a charge of A eV, 1 eV = 1.6 × 10−19 J.

 A parallel-plate capacitor has 4.00 cm2 plates separated by 6.00 mm of air. If a 12.0V battery is connected to this capacitor, how much energy does it store in Joules?

 2. Which of the following is the most effective conductor?

The electric field has a magnitude of 3.0 N/C at a distance of 30 cm from a point charge. What is the charge?

A 1.65 nC charge with a mass of 1.5 x 10-15 kg experiences an acceleration of 6.33 x 107 m/s2 in an electric field. What is the magnitude of the electric field?

. Three point charges are located on the x-axis. The first charge, q1 = +10 µC, is at x = -1.0 m. The second charge, q2 = +20 µC, is at the origin. The third charge, q3 = - 30 µC, is located at x = +2.0 m. What is the net force on q2?