The electric field in a region is radially outward with a magnitude E=Ar where E = electric field, A is a constant =`100V//m^2` and r denotes the distance from the origin in meters. Find the charge contained in a sphere of radius 0.20 m centred as the origin.

The value of electric field at a region of space is given by, E=Ar where A=100V .m^(2) and r=distance (in m) from origin inside the electric field. Find the amount of charge enclosed in a sphere of radius 20 cm centered at the origion. Given 1/(4piepsilon_(0))=9xx101/(4piepsilon_(0))=9xx10^(9)N.m^(2).c^(-2)

The eletric field in a certina region is acting radially outward and is given by E = Ar. A charge contained in 'a' centred at the origin of the field will be givne by

Electric field inside a sphere varies with distance as Ar. Find the total charge enclosed within the sphere, if A=3000 Vm^(-2) and R=30cm , where R is the radius of the sphere.

A point-charge q is placed at the origin. How does the electric field due to the charge vary with distance r from the origin?

Derive an expression for the electric field E due to a dipole of length 2a at a point at a distance r from the centre of the dipole on the axial line.

A non conducting solid sphere of radius R is uniformly charged. The magnitude of electric field intensity due to the sphre at a distance r from its centre

The electric force on an electron is equal to its weight in an electric field of intensity E. The charge of electron is e and mass is. m Then the value of E be—

Two charges of magnitudes -2Q and +Q are located at points (a, 0) and (4a, 0) respectively. What is the electric flux due to these charges through a sphere of radius 3a with its centre at the origin?

The electric potential V at any point (x, y, z) all in meters in space is given by V = 4x^(2)V . The electric field at the point (1,0,2) in V cdot m^(-1) is