Some equipotential lines are shown in figure. What can you say about the magnitude and the direction of the electric field ?

A plane electromagnetic wave travels in vacuum along z- direction. What can you say about the directions of its electric and magnetic field vectors? If the frequency of the wave is 30 MHz, what is its wavelength?

In a region, a uniform electric field and a uniform magnetic field are acting in the same direction. An electron is shot along the directio of the fields. What change will be obsverved in the magnitude and direction of the velocity of that electron ?

An electric dipole is formed by the two equal and opposite charges, 6nC each, kept 1 mm apart. Determine the magnitude and the direction of the field intensity at a point which is 3 m away from the midpoint of the line joining the two charges and making an angle 60^(@) with the line.

A point is in the XZ plane what can you say about its y coordinate

A long wire carries a current of 90 A in the east to west direction. What is the magnitude and direction of magnetic field due to the current I.5m below the line?

An electromagnetic wave is propagating along positive z-axis. At any moment, if the direction of the magnetic field at a point be along positive x-axis, what will be the direction of the electric field at that point?

An electron moving with velocity vecv along positive x-axis enters a uniform magnetic field vecB direction along positive y-axis. What is the magnitude and direction of force on the electron?