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

hw blank for physics, Exercises of Physics

Do some physics homework on some difficult topics

Typology: Exercises

2023/2024

Uploaded on 06/10/2025

riot-mcgrath
riot-mcgrath 🇺🇸

9 documents

1 / 7

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
PRACTICE – Point Charges – BLANK
Problem 1
Look at the two point charges in the picture.
a) Calculate the x- and y-components of the total electric field
at the origin of the axes due to the two charges in the picture.
b) Calculate the electric potential at the origin of the axes due to the two charges +7µC and
–3µC.
c) Calculate the x- and y-components of the electric force on a charge of –5µC placed at the
origin of the axes.
d) Calculate the electric potential energy of the two charges +7µC and –3µC together with a
charge of –5µC placed at the origin of the axes.
e) Calculate the electric potential energy of a charge of –5µC placed at the origin of the axes.
Dr. Cereghetti – PHY 13 – Point Charges BLANK – Practice – page !1
4m
2m
– 3µC
x
y
+ 7µC
pf3
pf4
pf5

Partial preview of the text

Download hw blank for physics and more Exercises Physics in PDF only on Docsity!

PRACTICE – Point Charges – BLANK

Problem 1 Look at the two point charges in the picture. a) Calculate the x - and y -components of the total electric field at the origin of the axes due to the two charges in the picture. b) Calculate the electric potential at the origin of the axes due to the two charges +7μC and

  • 3 μC. c) Calculate the x - and y -components of the electric force on a charge of –5μC placed at the origin of the axes. d) Calculate the electric potential energy of the two charges +7μC and –3μC together with a charge of –5μC placed at the origin of the axes. e) Calculate the electric potential energy of a charge of –5μC placed at the origin of the axes. 4m 2m
  • 3μC x y
  • 7μC

Problem 2 Charge Q 1 and charge Q 2 are placed in the xy - plane as shown in the picture where you will find all the pertinent informations. a) Calculate the x - and y -components of the total electric field at point P due to charges Q 1 and Q 2. b) Calculate the x - and y -components of the electric force on a charge Q 3 =−9μC placed at point P. c) Calculate the electric potential at point P due to charges Q 1 and Q 2 alone. d) Calculate the electric potential energy of a charge Q 3 =−9μC placed at point P. Q 2 = −2μC 1.5 m Point P Q 1 = +3.5μC 3 m y x

Problem 4 Charge Q 1 and charge Q 2 are placed in the xy - plane as shown in the picture on the right hand side where you will find all the pertinent informations. a) Calculate the x - and y -components of the total electric field at point P due to charges Q 1 and Q 2. b) Calculate the x - and y -components of the electric force on a charge Q 3 =−15μC placed at point P. c) Calculate the electric potential at point P due to charges Q 1 and Q 2 alone. d) Calculate the electric potential energy of a charge Q 3 =−15μC placed at point P. e) Calculate the electric potential energy of the couple of charges Q 1 and Q 2 together with a charge Q 3 =−15μC placed at point P. Q 2 = −7μC 4 m Point P Q 1 = +5μC 8 m y x

Problem 5 Two point charges Q 1 and Q 2 are placed in the xy - plane as shown in the picture. Positions and values of the charges are given in the picture. a) Calculate the x - and y -components of the total electric field at the origin due to charges Q 1 and Q 2. b) Calculate the x - and y -components of the electric force on a charge Q 3 =−4μC placed at the origin. c) Calculate the electric potential at the origin due to charges Q 1 and Q 2 alone. d) Calculate the electric potential energy of a charge Q 3 =−4μC placed at the origin. e) What is the electric potential energy of the charges Q 1 and Q 2 alone when positioned as in the picture above? y = 7m Q 1 = +3μC Q 2 = −2μC x = -10m y x origin 35º

Problem 7 In the picture on the right hand side, charge Q 1 = -6nC is placed at point ( x = -4cm, y = 4cm), charge Q 2 = +3nC is placed at point ( x = -4cm, y = 0), and charge Q 3 = -3nC is placed at point ( x = 4cm, y = 0 ). a) Calculate the total electric field at point P due to the charges Q 1 , Q 2 , and Q 3. Give x- and y -components. b) Calculate the total electric potential at point P due to presence of the charges Q 1 , Q 2 , and Q 3. c) How much work would you need to do to bring together charges Q 1 , Q 2 , and Q 3 , and position them like in the picture above? Assume you start with all three charges infinitely far away from each other. d) If you only consider the charges Q 2 and Q 3 positioned like in the picture above, what is the electric potential at point P due to their presence? e) If you only consider the charges Q 2 and Q 3 positioned like in the picture above, what is the electric field at point P due to their presence? y Point P^ x

Q 2 = +3 nC (^) 4 cm 4 cm Q 3 = –3 nC Q 1 = –6 nC

4 cm