Question

How much energy is transferred when 10 A current flows through a resistor of 5 ohm for 30 minutes?

Answer 1

For all living things, energy is the most basic form of life. The ability to work is defined as energy. The Joule is a unit of energy measurement used by the International System of Units. We know that energy can be transferred from one form to another; energy transfer refers to the movement of energy from one location to another.

Complete step by step solution:
Given:-
Current flowing through the resistors $= 10A$
Resistance of resistors $= 5\Omega$
Time taken to flow the current $30\min = 1800\sec$
Find out:- The energy transferred when given current flows through resistors
Let the energy transferred be E
We know that,
When a current flow through a device, then
Energy transferred $= {I^2}RT$----- (i)
where
I is the current flown through a device
R is the resistance of the device
t is the time for which current flows
Substituting the given values in equation (i)
$E{\text{ }} = {\text{ }}{\left( {10} \right)^2}\;X{\text{ }}5{\text{ }}X{\text{ }}1800$
$E = {\text{ }}100X{\text{ }}5{\text{ }}X{\text{ }}1800$
$E{\text{ }} = {\text{ }}9oooooo{\text{ }}J$
${\text{ }}E{\text{ }} = {\text{ }}900{\text{ }}kJ$
E = 9oooooo J
Hence 900kJ is the energy transferred when 10 A current flows through a resistor of 5 ohm for 30 minutes.
Energy transformation is the process by which energy is transformed from one form to another. Energy conservation refers to the fact that while energy can be transformed or transferred, the total amount of energy remains constant.
The four ways in which energy can be transferred are as follows:
Mechanically – through the use of force
Electrically – Electrically – Electrically – Electrically – Electrically
Radiation – either light or sound waves
Heating can be accomplished through conduction, convection, or radiation.

Note:
One of the fundamental laws of physics is the law of conservation of energy. In a chemical reaction, it governs the microscopic motion of individual atoms. “In a closed system, i.e., a system that is isolated from its surroundings, the total energy of the system is conserved,” says the law of conservation of energy. Energy cannot be created or destroyed; instead, it can only be transformed from one form to another.