how do you answer number 3? this is a non graded practice worksheet 3. An electron enters a uniform electric field perpendicular to the field lines. What is the magnitude of themagnetic field if the electric effect completely canceled?(A) Ev (B) v/E(C) zero (D) E/V(E) eEv-141-e4. A horizontal thin wire has a mass m and length L. The wire carries a constant current I. What must be themagnitude of the magnetic field in order to cancel the gravitational force?(A) IL/mg (B) mg/IL(C) Ig/mL (D) Im/gL (E) Zero

Answered: Image /qna-images/answer/e3128046-809f-41fa-9244-1f28066c4a67.jpg

3. An electron enters a uniform electric field perpendicular to the field lines. What is the magnitude of the magnetic field if the electric effect completely canceled? (C) zero (D) E/V (E) eEv (A) Ev (B) v/E 111 e 4. A horizontal thin wire has a mass m and length L. The wire carries a constant current I. What must be the magnitude of the magnetic field in order to cancel the gravitational force? (A) IL/mg (B) mg/IL (C) Ig/mL (D) Im/gL (E) Zero

3. An electron enters a uniform electric field perpendicular to the field lines. What is the magnitude of the magnetic field if the electric effect completely canceled? (C) zero (D) E/V (E) eEv (A) Ev (B) v/E 111 e 4. A horizontal thin wire has a mass m and length L. The wire carries a constant current I. What must be the magnitude of the magnetic field in order to cancel the gravitational force? (A) IL/mg (B) mg/IL (C) Ig/mL (D) Im/gL (E) Zero