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PHYS 1260 FINAL VERIFIED STUDY GUIDE, Exams of Physics

United States International UniversityPhysics

PHYS 1260 FINAL VERIFIED STUDY GUIDE

Typology: Exams

2025/2026

Available from 05/30/2026

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PHYS 1260 FINAL VERIFIED STUDY GUIDE
conductor - Answers - electric charges move freely
Insulator - Answers - electric charges that do not move freely
more charge - Answers - bigger force
electric force - Answers - between charges
attractive or repulsive
stronger
gravitational force - Answers - between masses
always attractive
electric and gravitational force - Answers - inverse square laws
acts at a distance (objects don't have to touch)
field forces
electric field is always there but there is no ____ without a test charge - Answers -
FORCE
Positive charge - Answers - electric field lines point away from it
negative charge - Answers - electric field lines point towards the charge
electric flux - Answers - how many electric field lines penetrate a surface
Max electric flux - Answers - when theta = 0
conservative force - Answers - decreases potential energy
gravitational force and electric field - Answers - conservative forces
electric potential differences - Answers - NOT dependent on the charge experiencing
the energy, but DOES depend electric field
occurs between 2 points
equipotential surfaces - Answers - when all points are at the same potential
no work needed to move charge
electric field is perp. to the surface at every point
Dielectric - Answers - reduces the electric field potential difference and increases
capacitance
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PHYS 1260 FINAL VERIFIED STUDY GUIDE

conductor - Answers - electric charges move freely Insulator - Answers - electric charges that do not move freely more charge - Answers - bigger force electric force - Answers - between charges attractive or repulsive stronger gravitational force - Answers - between masses always attractive electric and gravitational force - Answers - inverse square laws acts at a distance (objects don't have to touch) field forces electric field is always there but there is no ____ without a test charge - Answers - FORCE Positive charge - Answers - electric field lines point away from it negative charge - Answers - electric field lines point towards the charge electric flux - Answers - how many electric field lines penetrate a surface Max electric flux - Answers - when theta = 0 conservative force - Answers - decreases potential energy gravitational force and electric field - Answers - conservative forces electric potential differences - Answers - NOT dependent on the charge experiencing the energy, but DOES depend electric field occurs between 2 points equipotential surfaces - Answers - when all points are at the same potential no work needed to move charge electric field is perp. to the surface at every point Dielectric - Answers - reduces the electric field potential difference and increases capacitance

Pos. charge in an electric field - Answers - experience a force in the same direction as the field high potential to low potential gains kinetic and lose potential energy simplifying circuits with capacitors in parallel/ series - Answers - ID whether parallel or in series fine equiv. capacitance and redraw circuit repeat determine potential difference across charge/energy stored in a capacitor - Answers - simplify circuit to 1 equiv. capacitance find charge and potential difference across capacitor work backwards when temp increases - Answers - resistivity increases linearly current flows - Answers - away from positive terminal EMF (electromotive force) - Answers - devices that increase the potential energy of charges circulating in circuits ideal battery - Answers - potential difference across the resistor = potential across the battery real battery - Answers - has an internal resistance when charges move across a resistor - Answers - they lose potential energy current - Answers - flow of positive charges even though its the electrons moving negative charge in electric field - Answers - experiences a force in the opposite direction as the field. low potential to high potential gains kinetic energy and lose potential energy Find net electrical force on a charge - Answers - draw and label each force acting on a charge Find X and Y components of each force Add X and Y components separately Find magnitude and direction Find net Electric field at a point - Answers - draw and label field at the point Find X and Y components Add X and Y components separately

find current through and pot. difference across Work backwards Junction rule - Answers - (conservation of charge) current in= current out Loop rule - Answers - (conservation of energy) sum of potential difference closed loop = 0 neg to pos EMF, against current = pos delta V

  • to - EMF, with current = negative delta V RC Circuits- Charging capacitor - Answers - Switch has just been closed max current through circuit no charge on capacitor max potential difference across resistor no potential across the capacitor RC Circuits- Discharging Capacitor - Answers - Switch has been closed for a while no current through the circuit Max charge on capacitor max potential across capacitor no potential difference across resistor Parallel; series - Answers - Light bulbs are brighter in ____ but the same in ______ calculate the magnetic field due to its straight wire - Answers - find field due to each wire separately add the fields RHR # Calculate the magnetic field/ moment of a loop/solenoid - Answers - RHR# Calculate the force on moving charge and current carrying wire in external magnetic field - Answers - Force is perpendicular to B and V If V is parallel to B then NO force If V is perp. to B then centripetal force RHR# calculate the force between 2 current carrying wires - Answers - I in the same direction = attract I in opposite direction = repel calculate torque on loop - Answers - mew will align with B no torque if B is perp. to loop theta=

away from North towards South - Answers - magnetic field travels Flux through a surface - Answers - max flux = B perp. plane of loop no flux when B is parallel to plane of loop theta = 90 Lenz's law - Answers - what is the OG direction of B flux increase or decrease? flux increase= induced current produces a field in the opposite direction of the OG field Flux decrease= induced current produces B in the same direction of the OG field Lenz's Law - Flux increase - Answers - The induced current will produce a magnetic field in the OPPOSITE direction of the original field Lenz's Law - Answers - The induced current produces a magnetic field in the same direction as the original field motors - Answers - convert electrical energy into mechanical energy generators - Answers - Convert mechanical energy to electrical energy inductors - Answers - oppose increasing current in a circuit by producing a back EMF RL Circuits Switch closed (t=0) - Answers - Current increases rapidly Max back EMF RL Circuits long time after switch closed - Answers - Max current No back EMF Series RLC Circuit - Answers - ELI the ICE man Increasing L - Answers - more EMF produced Impedance - Answers - overall resistance for the whole circuit Electromagnetic waves - Answers - accelerated charges travel at the speed of light Transverse waves - Answers - Electric field and magnetic field are perp. and to the direction of motion Refraction - Answers - bending of light as in enters a second medium color red - Answers - moves the fastest and bends the least

ray 2: directed towardst he focal point and reflects parallel to axis ray 3: drawn through the center and back Converging lens steps - Answers - ray 1: parallel to axis and refracts at far focal point ray 2: straight through the center ray 3: enters the near focal and emerges parallel Diverging lens steps - Answers - ray 1: initially parallel and diverges near the focal point ray 2: through the center an straight back ray 3: enters the far focal and emerges parallel positive focal - Answers - concave mirror converging lens negative q - Answers - virtual image converging lens - Answers -