How is the direction of `vecE` related with type of field charge?

How is the direction of current related to the direction of flow of electron in a wire?

An electron revolvles in a circular orbit around a nucleus of charge Ze. How is the electron velocity related to the radius of its orbit?

An electric charge enters in electric field at right angles to the direction of electric field. What is the nature of the path followed?

An electric charge enters in electric field at right angles to the direction of electric field.What is the nature of the path followed ?

What is the direction of electric field intensity vector vecE ?

When can a charge act as a source of electromagnetic wave? How are there directions of electric and magneitc field vectors, in an electromagnetic wave related to each other and to the direction of propagation of the wave? Which physical quantity, if any has the same value for waves belonging to the differnt parts of the electromangetic spectrum?

How is the field directed if the sheet is positively charged

How a potential difference related with electronixc field intensity?