Electrical Engineering - Voltage, Current and Resistance - Discussion
Discussion Forum : Voltage, Current and Resistance - General Questions (Q.No. 3)
3.
Current flows in a circuit when
Discussion:
24 comments Page 1 of 3.
Manish Vishwakarma said:
6 years ago
Current flow always in a closed circuit.
For eg:
If you have two Wire and a lamp.
Then both wire first terminal you connect to the lamp and second terminal you connect only one wire. Then the lamp can't blow.
The reason is the circuit is not complete.
And again we connected both wires then lamp give light.
So the flow of current is important to close the circuit.
For eg:
If you have two Wire and a lamp.
Then both wire first terminal you connect to the lamp and second terminal you connect only one wire. Then the lamp can't blow.
The reason is the circuit is not complete.
And again we connected both wires then lamp give light.
So the flow of current is important to close the circuit.
(2)
M.P.Chari said:
1 decade ago
Yes, this is the correct answer, because the electrons flows alternately in the circuit, when the switch is opened the electrons cannot flow in the circuit thats why the current doesn't flow in the circuit. When the switch is closed the electrons flows into the circuit then the circuit becomes on, thats why current flows in the circuit when the switch is closed.
Prakash gayen said:
1 decade ago
We know v=ir, if v=0 [as per question] then definitely i=0. i.e no current flow through circuit.
Secondly if we consider this is a circuit which is closed i.e. [] then current will flow.
But if we consider circuit is open i.e [ ] no current flow.
So option B will be answer.
Secondly if we consider this is a circuit which is closed i.e. [] then current will flow.
But if we consider circuit is open i.e [ ] no current flow.
So option B will be answer.
Sasanka said:
9 years ago
A switch is open means circuit not completed. So, current not flow the circuit. But, the switch is close means circuit complete. So, current flow easily the circuit. So answer option B.
Rogers prosper said:
1 decade ago
When the switch is closed that's when the circuit is complete and current will flow through but when the switch is open the circuit is not complete so there will be no flow of current.
Madhusmita said:
10 years ago
Switch is open means the circuit incomplete. Switch is close means the circuit complete and the current always flow in a close path/circuit.
So option B is the answer.
So option B is the answer.
(1)
Sandhya said:
1 decade ago
When circuit is open current does not flow, When switch is closed in any circuit it acts as a closed circuit so current flows only in a closed circuit.
Rachit.Shah said:
1 decade ago
When circuit is open current not flow, because its not have any path to flow;and when switch is closed the path is created that's why current flows.
Shivam Sharma said:
10 years ago
When circuit is open then we can say the wire of system is cut at anywhere so there is no voltage transfer here so option B is correct answer.
Ram said:
1 decade ago
Yes, When circuit is closed current passing through the circuit. Without any voltage source no current flows through the circuit. Very good.
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