The question you should 1st ask is, what is current? Current can be defined as the flow of electric charge. This flow of electric charge only occurs, where there is difference in electric potential between two points(Voltage). Hence, for current to flow in a given electric circuit, voltage is required. This voltage can be provided either through direct connection of the circuit to a voltage source, or can be induced in the circuit through an external source.
Also, as per ohm's law: I = V/R. Therefore for current to flow in the circuit, both voltage and resistance is required. In an open circuit (circuit with voltage source, but no load), the current will be zero.
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The question you should 1st ask is, what is current? Current can be defined as the flow of electric charge. This flow of electric charge only occurs, where there is difference in electric potential between two points(Voltage). Hence, for current to flow in a given electric circuit, voltage is required. This voltage can be provided either through direct connection of the circuit to a voltage source, or can be induced in the circuit through an external source.
Also, as per ohm's law: I = V/R. Therefore for current to flow in the circuit, both voltage and resistance is required. In an open circuit (circuit with voltage source, but no load), the current will be zero.
Current is nothing but flow of charge inside the conductor. It is always true that any fluid or gas always flow from higher pressure to lower pressure (or temp.).
It is same in the case of charged particles, for charge to flow, we need different potential at different point.
Current will flow from higher potential to lower potential, as we know that v = i x r, current and reference voltage is always mutually dependent. from p = v x i, it is also true that both current and voltage has significance in power generation .
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