The Student Room Group

Confusion On Opamp


Potential at point O is 0 ( zero) as shown in circuit.
a) What would be the potential at point A.Is it Zero?
( But how since,current passes through this point.We know where there's current there's some potential.But Y it is said it's zero (i.e. virtual earth))

Potential at point O is 0 ( zero) as shown in circuit.
a) What would be the potential at point A.Is it Zero?
( But how since,current passes through this point.We know where there's current there's some potential.But Y it is said it's zero (i.e. virtual earth))

Solving this question will be reputed.
& thx in advance.
Reply 1
Yes its zero. Current flows down a potential gradient, this doesn't mean it can't flow through a point of zero potential.
Robob
Yes its zero. Current flows down a potential gradient, this doesn't mean it can't flow through a point of zero potential.


U know ohm's law wht it states tht,potential difference is directly proportional to current.Since there's no potential i.e. zero how the current flows.Do Clarify it.
Reply 3
OP: Could I suggest that you delete the other two threads that were created? :smile:

It's just to keep the forum tidy. :smile:
Reply 4
TymfAfterDeath
U know ohm's law wht it states tht,potential difference is directly proportional to current.Since there's no potential i.e. zero how the current flows.Do Clarify it.


The potential is zero, there is still a potential difference.
Reply 5
TymfAfterDeath
U know ohm's law wht it states tht,potential difference is directly proportional to current.Since there's no potential i.e. zero how the current flows.Do Clarify it.

English, please!
Mad Vlad
English, please!


Heyy,what is wrong there?:confused:
Operator
OP: Could I suggest that you delete the other two threads that were created? :smile:

It's just to keep the forum tidy. :smile:

Which threads you are talking about?:confused:

Latest