A 9 mC charge experiences a force of 5 N directed east. What is the electric fie
ID: 1305428 • Letter: A
Question
A 9 mC charge experiences a force of 5 N directed east. What is the electric field (magnitude and direction) at the location of the charge?
____ N/C AND in what direction: N, S E or W
Find the force (magnitude and direction) on a -20 mC charge that replaces the 9 mC charge.
____ N AND in what direction: N, S E or W
What is the electric field at a distance of 0.9 nm from a phosphorus nucleus containing 15 protons and 16 neutrons?
____ N/C
What is the electric field magnitude midway between charges of Q1 = 4 C and Q2 = 5 C separated by 2 m?
_____ N/C
What is the electric field midway between an electron and a proton separated by 0.5 nm?
_____ N/C
What is the force on a proton located in an electric field of 4600 N/C?
_____ N
What is the proton's acceleration?
_____ m/s2
The electric potential energy of an object at point A is known to be 47 J. If it is released from rest at A, it gains 18 J of kinetic energy as it moves to point B. What is its potential energy at B?
_____ J
How much work does a 13 V battery do in pushing 6 mC of charge through a circuit containing one lightbulb?
_____ mJ
Points A and B each have an electric potential of +6 V. How much work is required to take 7 mC of charge from A to B?
_____ J
What is the resistance of a lightbulb that draws 0.4 A when it is plugged into a 120 V outlet?
_____
If the coils of a heater have a resistance of 16 when hot, what current does the heater require? (Assume an 110 V source.)
_____ A
If a lightbulb has a resistance of 5 and a current of 1.4 A, at what voltage is it operating?
_____ V
Two 4 1/2 V batteries are connected in series to a 4 resistor. How much current flows through each battery?
_____ A
Two 6 resistors are connected in series to a 14 V battery. What single resistor, if connected to the battery alone (called the "equivalent resistance"), would draw this same current?
_____
What is the current through the battery?
_____ A
Two 2 resistors are connected in parallel to a 11 V battery. Use the fact that the voltage across each of the resistors is 11 V to find the total current through the battery.
_____ A
What single resistor, if connected to the battery alone (called the "equivalent resistance"), would draw this same current?
_____
What is the power used by a toaster that draws a current of 11 A when connected to a 120 V line?
_____ W
A heating element is rated at 1200 W. How much current does it draw when it is connected to a 110 V line?
_____ A
What is the power rating of a heating coil with a resistance of 12 that draws a current of 19 A?
_____ W
What is the resistance of a 50 W lightbulb in a 120 volt circuit?
___________
What force and acceleration would a proton experience if it has a velocity of 2. 106 m/s perpendicular to a magnetic field of 2.5 T?
Force
_____ N
acceleration
_____ m/s2
An ink drop with charge q = 3 ? 10-9 C is moving in a region containing both an electric field and a magnetic field. The strength of the electric field is 3. 105 N/C and the strength of the magnetic field is 1.0 T. At what speed must the particle be moving perpendicular to the magnetic field so that the magnitudes of the electric and magnetic forces are equal?
_____ m/s
A particle with charge q = 8.00 10-6 C and mass m = 1.00 10-4 kg is moving parallel to the Earth's surface at a speed of 1000 m/s. What minimum strength of magnetic field would be required to balance the gravitational force on the particle?
______ T
Force
_____ N
acceleration
_____ m/s2
Explanation / Answer
A 9 mC charge experiences a force of 5 N directed east. What is the electric field (magnitude and direction) at the location of the charge?
__0.55X10^3 __ N/C in E AND in what direction: N, S E or W
Find the force (magnitude and direction) on a -20 mC charge that replaces the 9 mC charge.
___11.11N_N and in W AND in what direction: N, S E or W
What is the electric field at a distance of 0.9 nm from a phosphorus nucleus containing 15 protons and 16 neutrons?
_2.66X10^10___ N/C
What is the electric field magnitude midway between charges of Q1 = 4 C and Q2 = 5 C separated by 2 m?
9*10^9_____ N/C
What is the electric field midway between an electron and a proton separated by 0.5 nm?
__4.608x10^10___ N/C
What is the force on a proton located in an electric field of 4600 N/C?
_7.36x10^-16____ N
What is the proton's acceleration?
___4,6x10^11__ m/s2
The electric potential energy of an object at point A is known to be 47 J. If it is released from rest at A, it gains 18 J of kinetic energy as it moves to point B. What is its potential energy at B?
___29__ J
How much work does a 13 V battery do in pushing 6 mC of charge through a circuit containing one lightbulb?
__78mJ
Points A and B each have an electric potential of +6 V. How much work is required to take 7 mC of charge from A to B?
___0__ J
What is the resistance of a lightbulb that draws 0.4 A when it is plugged into a 120 V outlet?
___300ohms_
If the coils of a heater have a resistance of 16 when hot, what current does the heater require? (Assume an 110 V source.)
_6.875____ A
If a lightbulb has a resistance of 5 and a current of 1.4 A, at what voltage is it operating?
___7 V
Two 4 1/2 V batteries are connected in series to a 4 resistor. How much current flows through each battery?
____2.25_ A
Two 6 resistors are connected in series to a 14 V battery. What single resistor, if connected to the battery alone (called the "equivalent resistance"), would draw this same current?
__12ohms___
What is the current through the battery?
____1.166_ A
Two 2 resistors are connected in parallel to a 11 V battery. Use the fact that the voltage across each of the resistors is 11 V to find the total current through the battery.
___22__ A
What single resistor, if connected to the battery alone (called the "equivalent resistance"), would draw this same current?
___1ohms__
What is the power used by a toaster that draws a current of 11 A when connected to a 120 V line?
___1320__ W
A heating element is rated at 1200 W. How much current does it draw when it is connected to a 110 V line?
___10.90__ A
What is the power rating of a heating coil with a resistance of 12 that draws a current of 19 A?
___4332__ W
What is the resistance of a 50 W lightbulb in a 120 volt circuit?
_______288 ohms____
What force and acceleration would a proton experience if it has a velocity of 2. 106 m/s perpendicular to a magnetic field of 2.5 T?
Force
_8.0x10^-13____ N
acceleration
__5x 10^14___ m/s2
An ink drop with charge q = 3 ? 10-9 C is moving in a region containing both an electric field and a magnetic field. The strength of the electric field is 3. 105 N/C and the strength of the magnetic field is 1.0 T. At what speed must the particle be moving perpendicular to the magnetic field so that the magnitudes of the electric and magnetic forces are equal?
__3x10^5___ m/s
A particle with charge q = 8.00 10-6 C and mass m = 1.00 10-4 kg is moving parallel to the Earth's surface at a speed of 1000 m/s. What minimum strength of magnetic field would be required to balance the gravitational force on the particle?
__0.125____ T
Force
_8.0x10^-13____ N
acceleration
__5x 10^14___ m/s2
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