# Tag Info

1 vote

### Upper and lower bounds in integral for potential

I think the confusion might be resolved if we clarify what exactly the second sphere being 'grounded' means. It means that the conductor is connected to some "external" reservoir of charge, ...
• 1,911
1 vote

### Can we make field lines for gravity?

The equation $\phi(\vec{r})=\phi_0$ defines a family of (equipotential)-surfaces along which no work is required to move a mass. Therefore for all $\gamma$ lying entirely on this surface, we have  \...
• 133
1 vote

### Can we make field lines for gravity?

Yes, although Micheal Faraday came up with the concept of field and field lines to describe electricomagnetic behaviour, you can represent any kind of force field with field lines, they are just lines ...
• 115
1 vote

### How does capacitance of a capacitor not depend on the distance of the capacitor to a battery?

If sphere A has a charge of Q and a radius of 1cm, then the voltage is 100kQ. If sphere A has a radius of 1cm and the gap between the 2 spheres is negligible, then we can say that a is 2cm away, and ...
• 175

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