# Tagged: Electric current

## Magnetic force & Torque, Factors that affect the torque & magnetic dipole moment

Fleming’s left hand rule is used to determine the direction of the magnetic force acting on a straight wire carrying an electric current placed perpendicular to a magnetic field, Let the pointer & thumb...

## The magnetic field due to current in a circular loop and a solenoid

The magnetic flux lines emerge from the North pole to the South pole outside the coil, A circular loop carrying an electric current is like a magnet in the form of a disk has...

## Magnetic effect of the electric current & Magnetic flux density due to current in two parallel wires

In 1819, a Danish physicist (Hans Oersted) brought a small compass near a wire carrying an electric current and parallel to it, He noticed that the compass needle deflected and when he turned the...

## Kirchhoff’s first law, Kirchhoff’s second law & how to solve problems of Kirchhoff’s laws

Kirchhoff’s Laws Some electric circuits consist of many branches and are too complicated to be managed by Ohm’s law because the electric current passing through them is different in each branch, For such cases,...

## Ohm’s Law for the closed circuit, Relation between emf (VB) of an electric cell & voltage across its poles

Ohm’s Law 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...

## Resistances connection (series & parallel), Electric energy and Electric power

Electric resistances can be connected in the electric circuit using two methods which are series connection, parallel connection, Home appliances are connected in parallel, Thus every device can work individually on the potential difference...