- #1
Volcano
- 147
- 0
Hi,
I need help to understand electometer. I can not understand the reason of opened leaves which grounded.
Suppose an electrometer charged negative then its metal knob connected with metal case with a conductor. Ok, now both leaves and metal body has the same potential. Now, let's disconnect metal case and metal know without loosing charges. They are already the same pottential. Thus, leaves closed, since pottential difference is zero.
Now, let's ground the leaves by touching metal knob and then cut the ground connection. I did not observed this, but i suppose leaves must open. Because there is a pottential difference with metal body and leaves. I can approve this.
But, if leaves open then must be charged.
Is it? If so,
how?
Which charge?
Whence come?
Thank you
I need help to understand electometer. I can not understand the reason of opened leaves which grounded.
Suppose an electrometer charged negative then its metal knob connected with metal case with a conductor. Ok, now both leaves and metal body has the same potential. Now, let's disconnect metal case and metal know without loosing charges. They are already the same pottential. Thus, leaves closed, since pottential difference is zero.
Now, let's ground the leaves by touching metal knob and then cut the ground connection. I did not observed this, but i suppose leaves must open. Because there is a pottential difference with metal body and leaves. I can approve this.
But, if leaves open then must be charged.
Is it? If so,
how?
Which charge?
Whence come?
Thank you