The voltmeter is connected across the two ends of a conductor to measure the potential difference across the two terminals of the conductor. The voltmeter is connected across the two poles of a battery...
The electrons still rotate around the nucleus due to the attraction force between the protons in the nucleus and electrons. The electrons may leave the atom and move freely due to the weakness of...
The emf of an electric cell (battery-source) is the total work done inside and outside the cell to transfer electric charges in the electric circuit, If we denote the emf of the battery by...
The electric resistance (The resistor) The electric current faces an obstruction (resistance) when it passes through a conductor which affects its intensity, The electric resistance is the opposition that the electric current faces during...
