Magnetism
Does the strength of a magnetic field work well over large distances?
No, the strength of a magnetic field dramatically decreases as distance increases.
Device that detects electric charge on an object
Electroscope
Which type of circuit allows a single light bulb to stop working and ALL of the other light bulbs will remain on?
Parallel Circuit
When electricity and magnetism meets it creates this
Electromagnet
What is this Equation called.....V=IR
Ohms Law
When two opposite poles of a magnet are brought toward each other they...
Attract one another
A substance through which electricity flows
Conductor
What is the total resistance in the following circuit
7 Ohms
What is the term for something that uses magnetism to create electricity?
A generator aka Dynamo
What does the Law of Conservation of Charges state?
Charges cannot be created or destroyed, only transferred
Where is the location of the strongest part of a magnet?
at the furthest end of it's poles
This substance blocks the flow of electricity
Insulator
In which type of Circuit does current remain the same throughout the entire circuit?
Series Circuits
In which orientation is a magnetic field in the presence of an electric field
Perpendicular or 90 degrees
How do fuses serve as protection against overheating?
The component inside the fuse melts if it gets too hot(a set temperature for each type of fuse) and severs the connection of the circuit
What happens if you break a magnet if half?
It creates 2 new magnets with 2 poles NOT 2 separate poles
Electricity is the flow of...
Electrons
What happens to voltage as it travels through a series circuit?
It decreases as it travels
The flow of electrons along a complete, closed path
Name 3 ways to increase the strength of an electromagnet
1. More Coils or Turns
2. Increase Current flowing through electromagnet
3. Decrease Resistance
4. Use more conductive material
Define Ferromagnetism
phenomenon where objects placed in a strong magnetic field become magnetized due to the poles within their atoms aligning (all e- in same direction).
The force that causes electric charge to move is called?
Voltage difference
How does adding more components in a parallel circuit influence resistance ?
As you add more components resistance DECREASES
Which has more voltage, a circuit with:
15 amps current, 10 ohms resistance or
12 amps current, 12 ohms resistance?
The 15amp/10ohm circuit with 150 V voltage differential
Alignment of ALL of it's particles in the same direction
Can you make an object magnetic, which isn't naturally magnetic? If so, how or using what?
Yes....you can create a magnet using certain materials by using a strong electrical current so that it aligns all of the electrons in an object in the same direction.
Name 2 types of batteries
Chemical battery, physical battery, ion battery
120volts