PHYSICS 112 EXAM 1 QUESTIONS AND VERIFIED
ANSWERS
The experiment of rods rubbed with wool/silk, this shows that there is a __________
between identical objects charged the same way - Answers - long-range repulsive force
Electric force - Answers - the force between charged objects
T/F: the electric force can be repulsive and attractive - Answers - true
When a plastic rod rubbed with wool is put near another plastic rod rubbed with wool
what happens - Answers - there is a repulsion
When a plastic rod rubbed with wool is put near a glass rod rubbed with silk what
happens - Answers - there is an attraction
Does distance effect the electric force? And how? - Answers - yes it decreases
Does the strength of rubbing the material against the rods effect the electric force? -
Answers - yes, the more vigorous the stronger the strength
What is a charge diagram - Answers - a schematic picture of the charge distribution
When a plastic rod is rubbed by wool what happens (charge wise) - Answers - not only
does the plastic rod acquire the negative charge but the wool acquires a positive charge
A neutral object contains ___________ of positive and negative charge - Answers -
equal amounts
The law of conservation of charge - Answers - charge is neither created nor destroyed,
only transferred from one place to another
Discharging - Answers - is removing a charge from an object which you can do by
touching it
Conductors - Answers - materials through or along which charge easily moves
Insulators - Answers - materials in which charge is immobile
Examples of insulators - Answers - glass and plastic
Example of a conductor - Answers - metal
ANSWERS
The experiment of rods rubbed with wool/silk, this shows that there is a __________
between identical objects charged the same way - Answers - long-range repulsive force
Electric force - Answers - the force between charged objects
T/F: the electric force can be repulsive and attractive - Answers - true
When a plastic rod rubbed with wool is put near another plastic rod rubbed with wool
what happens - Answers - there is a repulsion
When a plastic rod rubbed with wool is put near a glass rod rubbed with silk what
happens - Answers - there is an attraction
Does distance effect the electric force? And how? - Answers - yes it decreases
Does the strength of rubbing the material against the rods effect the electric force? -
Answers - yes, the more vigorous the stronger the strength
What is a charge diagram - Answers - a schematic picture of the charge distribution
When a plastic rod is rubbed by wool what happens (charge wise) - Answers - not only
does the plastic rod acquire the negative charge but the wool acquires a positive charge
A neutral object contains ___________ of positive and negative charge - Answers -
equal amounts
The law of conservation of charge - Answers - charge is neither created nor destroyed,
only transferred from one place to another
Discharging - Answers - is removing a charge from an object which you can do by
touching it
Conductors - Answers - materials through or along which charge easily moves
Insulators - Answers - materials in which charge is immobile
Examples of insulators - Answers - glass and plastic
Example of a conductor - Answers - metal
