What is the sum of the currents entering a junction is equal to the sum of the currents leaving the junction
100
Capacitance
What is the charge in coulombs required to raise the potential of a conductor by 1 V, ie 1 F = 1 C V-1
100
The current that flows when a 5.0 ohm resistor is has potential difference of 15V
What is 3.0A
100
Electric potential difference
What is energy per unit charge; (ratio idea necessary)
to move positive test charge between points;
200
Ampere
Unit of current, one coulomb per second
200
Kirchoff's Voltage Law
What is around any loop of a circuit, the total potential difference is zero OR what is between any two points in a circuit, the potential difference is the same regardless of the path taken.
200
Electric potential energy
What is the electric potential energy of a system of charges is the work done to move the charges from ∞ separation to their current positions
200
The charge that flows past a point in 3.0 s if the current is 2A
What is 6 C
200
Current
What is the rate of flow of charge past a given cross-section (of the conductor)
300
Electron volt
What is the work done to move one electron through a potential difference of 1 V
300
Ohm's Law
What is the resistance of a conductor is constant / current proportional to potential difference
if its temperature is constant;
300
Magnetic flux
What is a measure of the number of magnetic field lines passing through the region
product of normal component of magnetic field strength and area that it links
300
The potential difference across the cells if three 1.5V cells are connected in parallel to one another
What is 1.5V
300
Electric field strength
What is the force exerted per unit charge;
on a small positive (test) charge;
400
Resistivity
What is a constant of proportionality that is characteristic of a material, relating its area and length to its resistance
400
Lenz' Law
What is induced e.m.f. / current acts in such a direction;
to tend/produce effects to oppose the change causing it;
400
Magnetic flux linkage
What is product of number of turns in a coil and the flux through the coil
400
The terminal voltage if a 6V cell produces 2A of current and has an internal resistance of 1.5 ohms
What is 3V
400
Source of EMF
What is a device which can supply energy to an electric current
500
Ohm
What is the resistance that causes a potential difference of 1V when 1A of current passes through it.
500
Faraday's Law
What is e.m.f. (induced) is proportional/equal to the rate of change of flux (linkage);
(do not allow "induced current")
500
Electric potential
What is the work done per unit charge;
in bringing a small positive test charge;
from infinity to that point;
A completely accurate definition is necessary for maximum 3 points
500
A wire has a resistance of 2.0 ohms. If a second wire of the same material is twice as long and has double the radius, this is the resistance of the second wire.
What is 1.0 ohm?
500
Electromotive force
What is the power supplied per unit current / the energy supplied per unit charge OR
work done per unit charge in moving charge completely around the circuit / power supplied per unit current;