Switch contacts arcing in direct current... [electrical]

[Externet]

Hello all.

When the switch is on, 10 Amperes flow trough it.
When the switch is turned off, there is arcing between its contacts.

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Added resistor to circuit, consumes 0.025A tiny current.
When the switch is on, 10 Amperes flow trough the switch.
When the switch is turned off, is there arcing between its contacts ?

[John Cuthber]

Yes

[exchemist]

10 hours ago, Externet said:

Hello all.

When the switch is on, 10 Amperes flow trough it.
When the switch is turned off, there is arcing between its contacts.

----------------------------------------------------------------------------------

Added resistor to circuit, consumes 0.025A tiny current.
When the switch is on, 10 Amperes flow trough the switch.
When the switch is turned off, is there arcing between its contacts ?

I seem to recall the use of a capacitor in conjunction with a resistance, to suppress arcing in the switching of electric motors. But that I think is to lessen the inductive spike when the current is interrupted. In a circuit with a simple resistive load I'm not sure what would make a difference. 

[Endy0816]

Get rid of the air

 

[bangstrom]

11 hours ago, Endy0816 said:

Get rid of the air

 

Air is an insulator so getting rid of the air would make it worse. A capacitor would work to stop sparking.

[John Cuthber]

57 minutes ago, bangstrom said:

Air is an insulator so getting rid of the air would make it worse. A capacitor would work to stop sparking.

A vacuum is a much better insulator.

[Endy0816]

2 hours ago, bangstrom said:

Air is an insulator so getting rid of the air would make it worse. A capacitor would work to stop sparking.

Spark is the air becoming conductive(dielectric breakdown). I'm sure yours is more practical solution though lol.

 

Edited October 11, 2022 by Endy0816