Only need help on number 21. Please describe how you got the answer. In the figu

Question

Only need help on number 21. Please describe how you got the answer.

In the figure below, the ideal batteries have emf_1 = 50 V, emf_2 = 40 V, R_1 = 15 Ohms, R_2 = 5 Ohms. If the potential at point P is 100 V, what is the potential at point Q? 65 V 45 V 35 V 15 V None of the above A beam consisting of five types of ions labeled A, B, C, D, and E enters a region that contains a uniform magnetic field as shown in the figure below. The field is perpendicular to the plane of the paper, but its precise direction is not given. All ions in the beam travel with the same speed. The table below gives the masses and charges of the ions. What is the direction of the magnetic field? toward the right toward the left into the page out of the page toward the bottom

Explanation / Answer

21

two particles deflect in right side , hence they must have same polarity . similarly three particles deflected on left must have same polarity. according to table , two of the particles are negative . hence particles deflected to right are negative

using right hand rule , for the negative particles to get deflected towards right , the direction of magnetic field must be inward

hence correct choice is C)

Related Questions

Navigate

• Browse (All)
• Browse O
• Subjects

---

---

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