Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

Exam questions from City College of New York, Exams of Physics

Exam questions from City College of New York

Typology: Exams

2022/2023

Uploaded on 11/19/2023

derek-chen-1
derek-chen-1 🇺🇸

1 document

1 / 6

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
pf3
pf4
pf5

Partial preview of the text

Download Exam questions from City College of New York and more Exams Physics in PDF only on Docsity!

Sample Exam 2 - C26-30; PHY208; 90 mins; 11/21/2023 Name & ID 1 pt: 10x1 = 10 pts 2 pts: 10 x 2 = 20 pts Total: Questions = 20 ; Points = 30 Points: 1 1) An ohmic resistor dissipates energy at a rate of 0.10 W at a voltage V. If the voltage is halved, what is the rate at which energy is dissipated (W)? A) 0.018 B) 0.40 C) 0.20 D) 0.10 E) 0.025 Points: 1 2) "The sum of the currents into a junction equals the sum of the currents out of the junction" is a consequence of: A) Newton's second law B) Ohm's law C) conservation of charge D) Newton's third law E) conservation of energy Points: 1 > > 2 3) In the formula F = qv x B: > . > . > A) v must be perpendicular to B but not necessarily to F B) all three vectors must be mutually perpendicular > > > C) F must be perpendicular to both v and B > 2 > D) F must be perpendicular to B but not necessarily to v 2 > > E) F must be perpendicular to v but not necessarily to B Points: 1 4) A uniform magnetic field is in the positive z direction. A positively charged particle is moving in the positive x direction through the field. The net force on the particle can be made zero by applying an electric field in what direction? A) Negative y B) Positive z C) Positive x D) Negative x E) Positive y