Show:
Electrical Interactions
Electrical Forces & Fields
Electrical Potential
Magnetic Forces & Fields
Motors & Generators
100
The movement of charge caused by an external charged object
What is Induction
100
The direction of an electric field is always towards the what?
What is the direction a positive test charge would experience
100
When talking about a hollow conducting object, the charges distribute in what way?
What is evenly only on the outer surface of the conducting object.
100
This is given the symbol B and is measured in Teslas
What is Magnetic Field Strength
100
This device is used to measure small current inside voltmeters and ammeters
What is a galvanometer
200
This person said that the electrical force acting on charged objects depends on the charges and the distance between the charges
Who is Charles Coulomb
200
A sphere with a negative charge of 2.1 x 10^-6 C experiences an electrostatic force of repulsion of 5.6 x 10^-2 N when it is placed in the electric field produced by a source charge. Determine the magnitude of the electric field the source charge produces at the sphere.
What is 2.67 x 10^-4 N/C
200
The energy stored in the system of two charges a certain distance apart is referred to as what?
What is Electric Potential Energy
200
These are the tiny regions that make up all materials. Each one the these regions has a north and south pole
What is domains
200
This scientist stated that an electrical current can be induced in a wire only if the wire is exposed to a changing magnetic field.
Who is Faraday
300
Process of charging and object through the direct transfer of electrons when a charged object touches a neutral object.
What is Conduction
300
Determine the electric field at a position P that is 2.20 x 10^-2 m from the centre of a negative point of 1.70 x 10^-6 C.
What is 3.16 x 10^7 N/C
300
An electron is accelerated 2.3 x 10^-2 m through a potential difference of 4.7 x 10^3 V. What is the force on the electron.
What is 3.27 x 10^-14 N
300
A wire is carrying a current (electrons) into the page. What is the direction of the magnetic field around the wire?
What is counter-clockwise around the wire
300
This law states that the induced current flows in the direction which will create a magnetic field opposing the original cause of the induced current
What is Lenz's Law
400
A small sphere with a negative charge of 2.1 x 10^-6 C is brought near an identical sphere with a positive charge of 1.5 x 10^-6 C so that the distance between them is 3.30 cm. Calculate the magnitude and type (attraction or repulsion) of the force of one charge acting on another.
What is 26.0 N
400
Two positively charged spheres, A and B, with charges of 1.50 x 10^-6C and 2.00 x 10^-6 C, respectively, are 3.30 x 10^-2 m apart. Determine the net electric field at a point P located midway between the centres of the two spheres.
What is 1.65 x 10^7 N/C [left]
400
An electron is accelerated from rest through a potential difference of 3.00 x 10^4 V. What is the kinetic energy gained by the electron?
What is 4.8 x 10^-15 J
400
Calculate the magnitude and direction of the acceleration of an electron travelling east at a velocity of 8.30 x 10^4 m/s through a magnetic field of 3.10 x 10^-1 T directed south.
What is 4.52 x 10^15 m/s^2 [out of the page]
400
If two wires are running beside each other where one current is flowing into the page and the other wires current is flowing out of the page, what will be the force on the two wires?
What is the two wires will repel each other.
500
A small metal sphere (B) with a negative charge of 2.1 x 10^-6 C is placed midway between two similar spheres (A and C) with positive charges of 1.0 x 10^-6 C that are 3.3 cm apart. If the three charges are along the same line, calculate the net electrostatic force on the negative charge.
What is 34.7 N [right]
500
Calculate the net electric field at a point P that is 4.00 x 10^-2 m from a small metal sphere A with a negative charge 2.10 x 10^-6 C and 3.00 x 10^-2 m from another similar sphere B with a positive charge of 1.50 x 10^-6 C. These form a triangle with angle BAP being 36.9 degrees and angle ABP being 53.1 degrees.
What is 1.91 x 10^7 N/C [165 degrees]
500
An electron, travelling horizontally at a speed of 5.45 x 10^6 m/s, enters a parallel plate capacitor with an electric field of 125 N/C between the plates. If the electron falls a vertical distance of 6.20 x 10^-3 m toward the positive plate, how far will the electron travel horizontally between the plates?
What is 0.130 m
500
An electron is accelerated from rest through parallel plates with a potential difference of 125 V. It then enters an area perpendicular to a 0.056 T uniform magnetic field. Find the radius of the circular path it follows once in the magnetic field.
What is 6.7 x 10^-4 m
500
Why does Lenz's law hinder the operation of electric motors and generators?
At first a current must be provided through a magnetic field so the loop will rotate. When this happens however, the conducting wire cuts the magnetic field lines causing the generator effect. The direction of this induced current is opposing the original current and therefore hinders the movement of the conducting wire.