Electric Potential

Q.

Define electric potential and potential difference qualitatively and quantitatively. What are the units of their measurement?

Q.

What are the basic electrical principles?

Q.

Why is an electric potential scalar quantity?

Q.

When an electric current is passed, electrons move from

1. High potential to low potential

2. Low potential to high potential

3. Electrons flow from lower to higher potential except through power sources.

4. Electrons flow from higher to lower potential, except through power sources.

Q.

The electric potential at a point located far away from the charge is taken to be?

Q.

In a cell, electrons move from the positive terminal to the negative terminal.

1. True
2. False

Q.

Find the electric potential at a point if $0.002J$ work is to be done to bring a $40\mu C$ charge from infinity to that point.

Q.

State the relation between ‘volt’, ‘joule’ and ‘coulomb’.

Q.

Electric current will stop flowing when the potential difference is:

1. Zero

2. High

3. Low

4. Infinity

Q.

In an electric circuit electrons always move from _______ to ________ of the cell.

1. lower potential to higher potential

2. negative terminal to positive terminal

3. higher potential to lower potential

4. Both (a) and (b)

Q. How much work is done in moving a charge of 4 C across two points having a potential difference 12 V?

Q. Which of the following conductors is at the highest potential?

1. A
2. B
3. C
4. D

Q. what is the relation between Electric field (E) and Electric Potential (V) ??

Q.

How much work would be done by the electric field if $Q=20C$ were moved from $A(8V)$ to $B(3.5V)$?

Q. Electric potential is defined as the work done to move a unit charge from infinity to that point.

1. True
2. False

Q.

1 volt x 1 coulomb = ___________.

Q. What is the direction of electrons when an electric current is passed through a circuit?

1. From high potential to low potential
2. From low potential to high potential
3. In the direction of the current
4. In the direction of electric field

Q. The difference in electric potential between two points of a conductor is called voltage.

1. True
2. False

Q. is not an emf device.

1. Electric Generator
2. Battery
3. Solar Cell
4. Capacitor

Q.

Find the work done to transfer ${10}^{19}$ electrons from point A to B which is maintained at a potential difference of 5 volts.

1. 5 × 10¹⁹ J

2. 1 J

3. 8 J

4. 10 J

Q. Every point in a/an has an electric potential.

1. space
2. magnetic field
3. electric field

Q.

A point is said to have a high potential when there is a higher deficiency of ___ at that point.

1. protons

2. electrons

3. neutrons

4. atomic nuclei

Q. Electric potential is defined as the work done to move a unit charge from infinity to that point.

1. True
2. False

Q.

Electric current will stop flowing when the potential difference is:

1. Zero

2. High

3. Low

4. Infinity

Q. What is the work done in moving a charge of $0.4C$ across two points having a potential difference of $8V$?

1. 3.2

Q.

What do you mean by electric potential difference?

Q.

The condition for an electric charge to flow from one point to other is that the two points must have electric:

1. Circuit

2. Charge

3. Potential difference

4. Cell

Q.

1. Name the unit of potential in S.I.
2. Define the unit of potential in S.I.
3. What is the relation between joule and volt ?

Q.

Define electric potential at a point.

Q. What is the work done in moving a charge of $0.4C$ across two points having a potential difference of $8V$?

1. $0.2J$
2. $1.2J$
3. $3.2J$
4. $0.4J$