Potential and Potential Energy Relation

Q. A particle has a mass 400 times that of the electron and charge is double that of an electron. It is accelerated by 5V of potential difference. Initially the particle was at rest, then its final kinetic energy will be

1. 10 eV
2. 100 eV
3. 2000 ev
4. 5 eV

Q.

Work done by electrostatic force of a system of fixed charges on a 10 C charge in bringing it from some reference point to a point A is 100 J. Does this imply that the potential at A is 10 V?

1. Yes

2. No
3. \N
4. \N

Q. On moving a charge of 20 coulomb by 2 cm, 2J of work is done, then the potential difference between the points is:
[AIEEE - 2002]

1. 8 V
2. 2 V
3. 0.5 V
4. 0.1 V

Q. Any negative charge moves frompotential to potential.

1. higher
2. lower
3. zero
4. infinite

Q. A charge $Q$ is placed in front of a conducting sphere at a distance $2r$ from center of sphere as shown in the figure. Potential at point $P$ on the surface of sphere due to induced charges is

1. 0
2. $\frac{kQ}{3r}$
3. $\frac{kQ}{2r}$
4. $\frac{kQ}{6r}$

Q.

12 J of work has to be done against an existing electric field to take a charge of 0.01 from A to B. Hwo much is the potential difference $V_B-V_A$?

Q. An unchanged conductor $\text{A}$ is brought near a positively charged conductor $\text{B}$, then

1. the charge on $\text{B}$ will not change but the potential of $\text{B}$ will decrease.
2. the charge on $\text{B}$ will increase but potential of $\text{B}$ will not change.
3. the charge on $\text{B}$ will not change but the potential of $\text{B}$ will increase.
4. the charge on $\text{B}$ will decrease but potential of $\text{B}$ will not change.

Q.

Work done by electrostatic force of a system of fixed charges on a 10 C charge in bringing it from some reference point to a point A is 100 J. Does this imply that the potential at A is 10 V?

1. Yes

2. No
3. Potential will have any random value.
4. Can't comment

Q. A particle has a mass 400 times that of the electron and charge is double that of an electron. It is accelerated by 5V of potential difference. Initially the particle was at rest, then its final kinetic energy will be

1. 5 eV
2. 10 eV
3. 100 eV
4. 2000 ev

Q. A charge $Q$ is placed in front of a conducting sphere at a distance $2r$ from center of sphere as shown in the figure. Potential at point $P$ on the surface of sphere due to induced charges is

1. $\frac{kQ}{6r}$
2. $\frac{kQ}{2r}$
3. $\frac{kQ}{3r}$
4. \N