Chapter 8 Static Electricity Test
At a separation distance of 0.500-m, two like-charged balloons experience a repulsive force of 0.320 N. If the distance is halved, then the repulsive force would be
1.28 N
Object A is charged by contact using a negatively charged object.
Negative
Object A is charged by induction using a positively charged object.
Negative
At a location of 0.200 m from Object A, the electric field strength is 0.0500 N/C. If the electric field strength were measured at a location of 1.00 m from Object A, then the field strength would be
.002 N/C
At a location of 0.200 m from Object A, the electric field strength is 0.0500 N/C. If the electric field strength were measured at a location of 0.400 m from Object A, then the field strength would be
.0125 N/C
At a location of 0.200 m from Object A, the electric field strength is 0.0500 N/C. If the electric field strength were measured using a test charge with twice the charge at a location of 0.200 m from Object A, then the field strength would be
.0500 N/C
At a separation distance of 0.500-m, two like-charged balloons experience a repulsive force of 0.320 N. If the distance is doubled, then the repulsive force would be
.080 N
At a separation distance of 0.500-m, two like-charged balloons experience a repulsive force of 0.320 N. If the distance is increased by a factor of 3 and the charge of both balloons is doubled, then the repulsive force would be
.142 N
At a location of 0.200 m from Object A, the electric field strength is 0.0500 N/C. If the electric field strength were measured using a test charge with twice the charge at a location of 0.100 m from Object A, then the field strength would be
.2 N/C
A 1.19-gram charged balloon hangs from a 1.99-m string which is attached to the ceiling. A Van de Graaff generator is located directly below the location where the string attaches to the ceiling and is at the same height as the balloon. The string is deflected at an angle of 32 degrees from the vertical due to the presence of the electric field. Determine the charge on the Van de Graaff generator is the charge on the balloon is 2.27x10^-12 C.
.397 C
If a neutral object loses 1.5 x 10^6 electrons, then what will be its charge?
1.6x10^-19 times 1.5x10^6= +2.4x10^-13 C
At a separation distance of 0.500-m, two like-charged balloons experience a repulsive force of 0.320 N. If the distance is decreased by a factor of 3 and the charge of both balloons is doubled, then the repulsive force would be
5.76 N
A neutral plastic strip is rubbed with cotton and acquires a positive charge. Which of the following statements are true of the positively-charged strip?
It lost electrons to the cotton during the charging process. It has the opposite charge of the cotton. It has an excess of protons compared to the number of electrons. It could be used to charge an electroscope negatively by the process of induction.
A rubber rod has a greater electron affinity than animal fur. The rubber rod is charged by friction with animal fur. The rubber rod is then used to charge Object A by the method of contact.
Negative
Object A is used to charge an aluminum plate by the method of induction. The aluminum plate acquires a positive charge.
Negative
Positively charged balloon is left of Can N but a finger is contacting the can from the right. What charge is Can N?
Negative
Positively charged balloon is left of Cans I and J and a negatively charged balloon is right of the cans. Cans I and J have what charge?
Negative, Positive
Object A has a x-y coordinate position of (+5.0,0.0). Object B has a location of (0.0,+4.0). If Object A has a charge of -5.8 uC and Object B has a charge of +8.9 uC, then what would be the magnitude of the net electric force upon a +1.3 uC charge if placed at the origin?
Net force= .010 N
Positively charged balloon is left of Can P. What charge does it have?
Neutral
A negatively-charged object creates an electric field which can be measured at various locations in the region about it. An electric field vector is drawn for point X. Use your understanding of the electric field- distance relationship to draw E VECTORS for points A-E. (Length of arrow-strength of E Vector)
Now, assume that each of the points are positive test charges instead. Draw electric field lines that reflect this new consideration.
A rubber rod has a greater electron affinity than animal fur. The rubber rod is charged by friction with animal fur. The rubber rod is then used to charge Object A by the method of induction.
Positive
A rubber rod has a greater electron affinity than animal fur. The rubber rod is charged by friction with animal fur. The rubber rod is then used to charge an aluminum pop can by the process of induction. The pop can is then contacted to Object A.
Positive
Object A is charged by friction using animal fur. Animal fur has a greater electron affinity than object A.
Positive
Object A is used to charge an aluminum plate by the method of induction. The aluminum plate acquires a negative charge.
Positive
Negatively charged balloon is held to the left of two cans G,H. Cans G and H have what charge?
Positive, Negative
Two negatively charged balloons are on the sides of 3 cans KLM. What charge do the cans have?
Positive, Negative, Positive
