Electrostatic Force and Electric Fields – Practice

Questions:

1) Calculate the uniform electric field that will cause a force of 8.0 × 10−24 N on a proton (qp = 1.602 × 10−19 C):

2) Calculate the force that an electron will experience in an electric field of 0.0035 NC−1 (qe =  −1.602 × 10−19 C):

3) Calculate the acceleration of an electron in an electric field of 1.2 NC−1 (mass of an electron = 9.1 × 10−31 Kg):

4) Calculate the charge on two identical positively charged particles separated by a distance of 1.4cm if there is a repulsive force of 0.006N between them:

Quick Answers:

1) 5 × 10−5 NC−1 in the direction of the force

2) 5.607 × 10−22 N in the opposite direction to the field

3) 2.1 × 1011 ms−2 in the opposite direction to the field

4) 1.14 × 10−8 C

Worked Answers: