Electrical Engineering - Current Circulation

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Current Circulation

Is it possible if their is no voltage then their is no current circulation or does it depend on circuit condition?

Total Answers and Comments: 5

Last Update: April 04, 2009 Asked by: Abhijit_atrangi

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Submitted by: NimishB

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.

Above answer was rated as good by the following members:
arun uday rana

July 31, 2008 10:31:11

ankurgupta_ee

Member Since: July 2008 Contribution: 1

RE: Current Circulation

we know that
V IR
I V/R
so if V 0
then I 0........

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0 3

Overall Rating: -3

August 01, 2008 11:16:04

skm_adil786

Member Since: July 2008 Contribution: 2

RE: Current Circulation

When open circuit condition i.e current is zero and voltage has max value. same as short ckt v o and i has max value

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0 1

Overall Rating: -1

August 01, 2008 16:29:45

NimishB

Member Since: August 2008 Contribution: 1

RE: Current Circulation

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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1 0

Overall Rating: +1

August 02, 2008 02:41:28

arun uday rana

Member Since: July 2008 Contribution: 6

RE: Current Circulation

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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April 04, 2009 02:35:12

manojprabu

Member Since: March 2009 Contribution: 5

RE: Current Circulation

You are right without voltage their is no current circulation in any circuit (EMF is electro motivate forces is the force that produces movement of electrons in circuit if it is closed)
Voltage is the major source of current.

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