Electric Potential and Potential Difference

Q.

What is the Working Principle of a Transformer?

Q.

How much energy is given to each coulomb of charge passing through a $6V$ battery?

Q.

What are the 4 basic units of Electricity?

Q.

what is the meaning of "potential" in physics?

Q.

What is the SI, unit of potential difference?

Q. is the formula to calculate the electric potential.

1. V = W/Q
2. V = W x Q
3. V = W/t
4. V = W x t

Q.

How much work is done in moving a charge of 2 C across two points having a potential difference of 12 V?

Q.

How is the electric field related to voltage?

Q. What are ohmic and non-ohmic conductors. Draw V-I graph for both the coductors.

Q.

The electric potential at a point is the amount of work done in bringing a unit positive charge from infinity to that point.

1. True

2. False

Q. How to define electric potential?

Q.

Define Potential difference.

Q.

Difference between electric potential and electric potential energy

Q.

What is meant by saying that the electric potential at a points is 1 volt?

Q.

Why potentiometer is preferred over voltmeter?

Q. Define ohms law

Q.

How much work is done in moving a charge of two coulombs from a point at $118volts$ to a point at $128volts$?

1. $10J$

2. $20J$

3. $\frac{1}{10}J$

4. none of these

Q.

If the tube length of the astronomical telescope is 105 cm long and magnifying power is 20 for normal setting. Calculate the focal length of the objective. Given magnifying power(m)= $m=\frac{f_0}{f_e}$.

1. 100 cm

2. 10 cm

3. 20 cm

4. 25 cm

Q.

Explain the statement the potential difference between two points is 1 volt'

Q.

Two identical metal plates are given positive charges $Q_1$ and $Q_2\left(<Q_1\right)$ respectively. If they are now brought close together to form a parallel plate capacitor with capacitance $C$, The potential difference between them is

1. $\frac{Q_1+Q_2}{2C}$

2. $\frac{Q_1+Q_2}{C}$

3. $\frac{Q_1-Q_2}{C}$

4. $\frac{Q_1-Q_2}{2C}$

Q. Two metal spheres of same mass are suspended from a common point by two light insulating strings. The length of each string is same. The spheres are given charges +q and +4q as shown. Which of the following diagrams best shows the resulting positions of spheres?

1. 
2. 
3. 
4. 

Q.

How much work is done when one coulomb charge moves against a potential difference of 1 volt?

Q.

How is the electric potential difference between the two points defined ? State its S.I. unit.

Q.

What is the work done in carrying a charge Q once around a circle of radius r about a charge Q at the center.

Q.

If $4\times {10}^{-3}J$ of work is done in moving a particle carrying a charge of $16\times {10}^{-6}C$ from infinity to a point. What will be the potential at that point?

Q.

A charge $Q$ is moving $\overrightarrow{dl}$ distance in the magnetic field $\overrightarrow{B}$. Find the value of work done by $\overrightarrow{B}$

1. Infinite

2. $1$

3. $-1$

4. zero

Q.

What do you understand by the term "electric potential" ? (or potential) at a point? What is the unit of electric potential?

Q. What is the order of discharge potential for anions with table

Q.

(a) State the relation between potential difference, work done and charge moved.
(b) Calculate the work done in moving a charge of 4 coulombs from a point at 220 volts to another point at 230 volts.

Q. If the tube length of astronomical telescope is 105 cm long and magnifying power is 20 for normal setting. Calculate the focal length of objective.

1. 100 cm
2. 10 cm
3. 20 cm
4. 25 cm