voltage difference: negative compared to ground

[dpopiz]

I'm a bit confused about voltage. If I have one wire that's +150V and another that's -150V, the difference is 150V right?

but if I have +150V and 0V (ground), the difference is 150V right?

what's going on?

 

[scorpmatt]

the mystery of electronics and math escape you

 

[So]

Originally posted by: dpopiz
I'm a bit confused about voltage. If I have one wire that's +150V and another that's -150V, the difference is 150V right?

but if I have +150V and 0V (ground), the difference is 150V right?

what's going on?

Difference between +150V and Ground == 150V

Difference between -150V and Ground == 150V

Difference between +150V and -150V == 300V

Remember voltages are all relative, 0V is just a reference we've set. So, if you consider the '-150V' to be your ground, then you can measure the +150V as 300V

 

[FoBoT]

Originally posted by: So

Originally posted by: dpopiz
I'm a bit confused about voltage. If I have one wire that's +150V and another that's -150V, the difference is 150V right?

but if I have +150V and 0V (ground), the difference is 150V right?

what's going on?

Difference between +150V and -150V == 300V

Remember voltages are all relative,

:thumbsup: 300V is the answer

 

[Goosemaster]

Originally posted by: scorpmatt
the mystery of electronics and math escape you

LOL...so so cruel

 

[nwfsnake]

Don't complete the circuit! :Q