Which of the following statements is are true Electric field

Which of the following statements is (are) true? Electric field lines point inward toward negative charges. Electric field lines form circles around positive charges. Electric field lines may cross. Electric field lines point outward from positive charges. A positive point charge released from rest will initially accelerate along a tangent to the electric field line at that point. Two infinite non-conducting plates are parallel to each other, with a distance d -20.0 cm between them, as shown in the figure. Each plate carries a uniform charge distribution of sigma= - 8.5 muC/m^2. What is the electric field, Ep% at point P (with Px = 40.0 cm)? What is the electric field, Ed, at x)int d (in the middle point between two plates, to left plates is 10.0 cm and to right plates is als-0.0 cm).

Solution

1) a ,d and e options are correct.

E-field lines point inward toward negative charges. TRUE

E-field lines point outward from positive charges TRUE

A positive point charge released from rest will initially accelerate along an E-field line. TRUE

he electric field of a negative point charge points towards the point charge as a result of the definition of the electric field of a point charge. To see this, recall that the electric field of a point charge q is defined as

E=1/40)q/r²er

where, r is the distance to the charge, and er is the outward pointing radial unit vector field emanating from the location of the charge. If q is negative, then we see that the electric field points in the direction of er, and therefore it points radially inward.