Question

The water stored in a dam on a river has ?
A. Kinetic energy
B. Potential energy
C. Electrical energy
D. Biomass energy

Answer 1

Hint : The energy possessed by the body virtue of the position called potential energy. Potential energy depends on the mass of the object, acceleration due to gravity and height of the object placed. By increasing the mass of the object and height of the object, we can increase the potential energy.

Complete Step by step solution:
The energy possessed by the body virtue of the motion is called kinetic energy. The expression for kinetic energy is $K.E = \dfrac{1}{2}m{v^2}$
where $m$ is the mass of the object and $v$ is the velocity of the object. Kinetic energy increases by increasing the mass and velocity of the object. Hence, option A is wrong
The electrical energy derived from the potential energy and kinetic energy of the charged particle That is energy derived from the movement of charge from one point to another point. The electrical energy depends on the product of charge and potential difference. Hence, the option C is wrong.
The biomass energy produced by living organisms. Hence ,the option D is wrong.
The energy possessed by the particle virtue of the height is called potential energy. The potential energy depends on the mass of the object and height of the object.
The expression for potential energy is
$P.E = mgh$
Where $m$ is the mass of the object, $g$ is acceleration due to gravity and $h$ is the height of the object .

The potential energy increases by increasing height of the object. Hence option B is correct.

Note: The Pressure normally depends on potential energy, and kinetic energy of the particle.to increase the potential energy, height places the vital role. By increasing height, we can increase the pressure of the water and water will come more Pressure to the ground surface. That is why water tankers are installed in height places.