CBSE Class 10 Answered
Expert Answer
Assume two containers connected with a channel. When one is higher than the other one, as shown in the figure below, the water in the higher container starts running from the top one to the bottom one creating a current. This happens because the water in the higher level relative to ground has a higher potential energy.
Voltage is the potential energy that makes the electrical current flow in a circuit by pushing the electrons around. The unit of voltage is volt shown as 'v'. To be more accurate, one Volt is equal to one Joule of energy that can move one Coulomb of electrical charge. Formula below shows this relation.
In this formula, V is the voltage which is measured in volt.
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