Electrons from a heated filament pass through a hole in the cathode. They are th

Question

Electrons from a heated filament pass through a hole in the cathode. They are then accelerated between the cathode and anode. When they pass through the anode they are travelling at 8.4x10^6 m/s. They then pass through parallel plates. The plates have an area of 6.25x10^-4 m^2 and are separated by a distance of 0.005 m. The uniform electric field between them is 1.0x10^3 N/C. a) what direction are the electrons deflected? b) by how much are the electrons deflected after passing through the plates?

Explanation / Answer

Correct the rule to read " your palm is facing the direction of deflection. The positive or negative is considered only for the direction of conventional current direction. Once your thumb points the direction of conventional current, the force is acting on the charge whether it is positive or negative it will be in the direction shown by your palm. ======================================… magnetic field vectors are pointing up . Electrons in the conductor are moving to left or the positive charges are moving to right. You are pointing the thumb to the right and other fingers up. Now both the electrons as weill as the positive charges in side the conductor are pulled out of the page. ======================================… According to your conception , then elecrons and positive charges will be pulled away from the conductors. There will be flow of electons into the page and flow of positive charges out of the page. You know that it cannot take place.

Related Questions

Navigate

• Browse (All)
• Browse E
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.