ankurgupta_ee

 Profile Answers by ankurgupta_ee 

• Jul 31st, 2008

 

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

skm_adil786

 Profile Answers by skm_adil786 

• Aug 1st, 2008

 

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

NimishB

 Profile Answers by NimishB 

• Aug 1st, 2008

 

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.

arun uday rana

 Profile Answers by arun uday rana 

• Aug 2nd, 2008

 

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 .

manojprabu

 Profile Answers by manojprabu 

• Apr 4th, 2009

 

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.