List of top Physics Questions on potential energy

An object of 10 kg at a height of 5 m has potential energy (\(g = 9.8\,m/s^2\)): 

Current in a circuit is 0.6 A when an external resistance of \( 3 \, \Omega \) is connected. When the external resistance is changed to \( 6 \, \Omega \), current in the circuit becomes 0.4 A. Find the internal resistance of the cell.
The potential energy of a body at a height of 10 meters is 200 J. What is its mass? (Take \( g = 10 \, \text{m/s}^2 \))
A mass of \( 0.5 \, \text{kg} \) is attached to a spring with a spring constant \( k = 200 \, \text{N/m} \). The mass is displaced by \( 0.1 \, \text{m} \) from its equilibrium position. What is the potential energy stored in the spring?
A body of mass 4 kg is lifted to a height of 5 meters. What is the potential energy gained by the body? (Take \( g = 9.8 \, \text{m/s}^2 \))

A particular color of light has a wavelength of 663 nm. What is the energy possessed by the light? 
(Planck’s constant $h = 6.63 \times 10^{-34}$ J·s; Velocity of light $c = 3 \times 10^8$ m/s)

Two springs with spring constants \(K_1 = 1500 \, \text{N/m}\) and \(K_2 = 3000 \, \text{N/m}\) are stretched by the same force. The ratio of potential energy stored in spring will be
Potential energy function corresponding to conservative force is given as  \(U(x, y, z) = \frac{3x^2}{2} + 5y + 6z\) then the force at \(x = 6\) is \(pN\). The value of \(p\) upto \(2\) its nearest integral value is
Match List I with List II
LIST ILIST II
AIsothermal ProcessIWork done by the gas decreases internal energy
BAdiabatic ProcessIINo change in internal energy
CIsochoric ProcessIIIThe heat absorbed goes partly to increase internal energy and partly to do work
DIsobaric ProcessIVNo work is done on or by the gas
Choose the correct answer from the options given below:
If the potential difference between $B$ and $D$ is zero, the value of $x$ is $\frac{1}{n} \Omega$ The value of $n$ is ______
Potential difference between B and D
As shown in the figure, In an experiment to determine Young's modulus of a wire the extension-load curve is plotted. The curve is a straight line passing through the origin and makes an angle of $45^{\circ}$ with the load axis The length of wire is $628 \,cm$ and its diameter is $4 \,mm$ The Young's modulus is found to be $x \times 10^4 Nm ^{-2}$The value of $x$ is
In an experiment to determine Young's modulus of a wire the extension-load curve is plotted.
The work functions of Aluminium and Gold are 4.1 eV and 5.1 eV respectively. The ratio of the slope of the stopping potential versus frequency plot for Gold to that of Aluminium is 

An electron is accelerated through a potential difference of 100 V. What is the de Broglie wavelength of the electron? (Assume $ h = 6.626 \times 10^{-34}$  J·s , $ m_e = 9.1 \times 10^{-31}$  $\text{kg} $, $ e = 1.6 \times 10^{-19}$ $\,$ $\text{C} $.)

A 0.4 kg mass takes 8 s to reach ground when dropped from a certain height ‘P’ above surface of earth. The loss of potential energy in the last second of fall is ____ J. (Take g = 10 m/s2)
Given below are two statements:
Statement I: If E be the total energy of a satellite moving around the earth, then its potential energy will be \(\frac{E}{2}\)
Statement II: The kinetic energy of a satellite revolving in an orbit is equal to the half the magnitude of total energy E.
In the light of the above statements, choose the most appropriate answer from the options given below
A particle executes Simple Harmonic Motion (SHM) with amplitude \( A \). The distance from the mean position when its kinetic energy becomes equal to its potential energy is:
The potential difference across the ends of a conductor is $ (50 \pm 3) $ V and the current through it is $ (5 \pm 0.1) $ A. The percentage error in the measurement of the resistance of the conductor is: Options:
The potential energy of a body is given by \(U(x)\) and it has mechanical energy is E. Then its potential energy when its velocity is zero is given by?
Potential energy as a function of r is given by \(U = \frac{A}{r^{10}}-\frac{B}{r^5}\), where \(r\) is the interatomic distance, A and B are positive constants. The equilibrium distance between the two atoms will be:
When a block of mass \(M\) is suspended by a long wire of length \( L\), the length of the wire becomes \((L+l)\). The elastic potential energy stored in the extended wire is:
The magnetic potential energy stored in a certain inductor is 25 mJ, when the current in the inductor is 60 mA. This inductor is of inductance
The energy stored in the electric field produced by a metal sphere is $4.5\, J$. If the sphere contains $ 4 \, \mu C$ charge, its radius will be : [Take : $\frac{1}{4 \pi \epsilon_o } = 9 \times 10^{9} \, N - m^2 / C^2$ ]
A spring with force constant \(k\) is initially stretched by \(x_1\). If it is further stretched by \(x_2\), then the increase in its potential energy is
The electric field in a region is given by $\overrightarrow {E} = \left(\frac{A}{x^{3}}\right) \hat{i} $ An expression for the potential in the region assuming the potential at infinity to be zero is
This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two Statements. If you push on a cart being pulled by a horse so that it does not move, the cart pushes you back with an equal and opposite force. The cart does not move because the force described in statement 1 cancel each other.