The bending of a wave around a barrier, such as an obsticle or the edges of an opening
100
What is the force that repels as well as attracts?
Electricl because gravity doesn't repel
100
How is strength of an electric field indicated with field lines?
The closer the lines, the stronger the field
100
What is the type of circuit that doesn't have an overloading problem?
Series Circuit
100
Can you sense the force field that surrounds a charged Van de Graaff generator?
Yes
200
What is electrostatics?
The study of electric charges at rest
200
Which has more mass- a proton or electron?
Proton
200
How are gravitational field and an electric field similar?
Both fields exert forces
200
What is the total resistance in a connected circuit that has three 3-ohm resistors?
9 Ohms
300
What is grounding?
Allowing charges to move freely along a connection between a conductor and the ground
300
What is the SI unit of charge?
Coulomb
300
What is the SI unit for electrical potential?
V is the SI unit of electrical potential
300
If two lights with different resistance values are wired in series, which will burn brighter?
Low resistance bulb because it draws more current
400
What is serious circuit?
An electric circuit in which devices are arranged so that charge flows through each in turn. If one part of the circuit should stop the current, it will stop throughout the circuit
400
What is lightning?
Large amounts of electricity
400
What is the relationship between the amount of work you do on an object and its potential energy?
The more work you do, the more potential energy
400
If several resistors are connected in parallel, what do we know about the total resistance?
The total resistance has a value lower than any of the individual resistors
500
What is potential difference?
The difference in electric potential (volatage) between two points. Free charge flows when there is a difference, and will continue until both points reach a common potential
500
What is a semiconductor?
Something that insulates and conducts electricity
500
What is the size of the electric field inside any charged conductor?
Zero
500
When you add devices to a series circuit with a battery, what happens to the voltage?
The individual voltage across each device decreases