# New post in Conductors

## Does the surface charge density at the peak of a conical projection is smaller than that of on the peak of a conical hole?

November 25th, 2022

## Why does the charge on the outer surface cancel the external field inside a conductor having a cavity filled with certain charge?

January 23rd, 2021

## Why does my measured I-V curve for a film of aluminum suggest high resistance?

November 14th, 2020

June 21st, 2020

## Work done by magnetic field on current carrying conductor

October 14th, 2020

July 7th, 2021

August 1st, 2022

August 1st, 2022

July 11th, 2020

April 7th, 2020

April 12th, 2020

August 1st, 2022

## Why does Griffiths's book say that there can be no surface current since this would require an infinite electric field for an incident wave?

October 14th, 2020

August 1st, 2022

March 4th, 2020

## How to show mathematically that the electric field inside a conductor is zero?

November 23rd, 2020

July 29th, 2020

## Is a signal traveling through fiber faster than a signal traveling through copper?

December 3rd, 2021

## Why is the charge transferred by electrons and not by protons?

February 2nd, 2020

March 12th, 2020

August 1st, 2022

## Tree vs lightning rod: why does one burn and the other not?

November 18th, 2020

## When two spheres of equal charge make contact, why does the larger sphere gain more charge?

September 26th, 2021

March 8th, 2020

## How is the answer to this question \$1/c\$ seconds?

January 5th, 2022

## Why is the field inside a conducting shell zero when only external charges are present?

October 25th, 2021

August 1st, 2022

## Where do all these electrons come from?

November 17th, 2020

## Why do liquid metals conduct electric current?

November 28th, 2020

August 1st, 2022