Part A: Use Right hand Rule, thumb pointing in direction of E, so your fingers would point "upwards" at p.

Part B:

Given:

Electric field = 300 V / m

diameter (d) = 10.4 cm

radius (r) = 14.7 cm

Change in electric field = 19 V/m*s

Use the following formula from Maxwell's equation:

**Electric Flux = Surface integral of Electric field *change in Area **

**Change in Electric Flux = Change in Electric field * Area**

first calculate the Area,

Area = pi*radius^2 , since radius = diameter / 2

Area = pi*(d/2)^2

plugging back in the area and the change in electric field you can find the **change in electric flux.**

To find the **magnitude of the magnetic field **at p,

Use this formula, which has been derived from Maxwell's equations:

furthermore, I is 0, so magnetic field, B, is equal to:

B *2*pi*r =

(*where r, is the r given in question)

So ,

B = / 2

Plugging in the constants in front we get:

**B = (4pi*10^-7)*(8.854*10^-12)*change in electric flux / (2pi*r)**