Flashcards
Electrostatics and Electromagnetism
Cards in this deck (31)
- 1Electric fieldA region in which an object experiences a force, owing to the object being charged
- 2Electric field lines map the path of...Positive charges
- 3Electric charge symbolQ
- 4Electric charge unitC (coulomb)
- 5Electric field strength unitNC^-1
- 6Electric field strengthA vector quantity that has the same direction as the charge's force (F)
- 7Electric potential energyThe energy that is needed to move a charge against an electric field
- 8Voltage/electrical potential differenceThe measure of specific potential energy (potential energy per unit charge) between two locations
- 9Increasing supplied voltage between two parallel plates will...Increase electric field strength
- 10Decreasing plate separation will...Increase electric field strength
- 11ConductorA material or object that permits an electric current to flow easily
- 12Electric currentMovement/flow of electric charges in a circuit
- 13Current symbolI
- 14Current unitA
- 15CircuitA closed loop that electrons can travel in. A source of electricity, such as a battery, provides electrical energy in the circuit
- 16ResistanceQuantity that describes how much an electrical component restricts the flow of current
- 17Resistance is...Directly proportional to the wire's length and inversely proportional to cross-sectional areas of the wire
- 18In a series circuit- Current is the same through all components
- Voltage adds up to the supply
- Resistors combine to give more resistance - 19In a parallel circuit- Current adds up to the supply
- Voltage is the same across all components
- Resistors combine to give less resistance - 20Like poles and charges...Repel
- 21Unlike poles and charges...Attract
- 22Magnetic field linesExist in the space around a magnetized object because other magnetic objects experience a force near the first magnetized object
- 23Magnetic field symbolB
- 24Magnetic field strength unitT (tesla)
- 25Right-hand grip rule-Magnetic field in direction of fingers
-Current in direction of thumb
-Direction of M.F is direction of curled fingers - 26Right-hand slap rule-Direction of the current is the direction of the thumb
-Direction of field is fingers
-Palm is direction of force - 27A wire experiences a force when...A current carrying wire is placed close to another magnet
- 28Electromagnetic inductionWhen a force moves a wire through a magnetic field, voltage is induced across the ends of the wire
- 29Lenz's lawThe direction of the induced current always opposes the change producing it - results in the conservation of energy
- 30A larger voltage is induced if-The magnet is stronger
-The magnet is moved faster
-There are more turns of wire
-The solenoid has a soft iron core - 31—
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- NCEA Level 2 Physics (Electricity & Electromagnetism ) Flashcards on Electrostatics and Electromagnetism , created by Jessica Michaels on 12/10/2022.
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- Jessica Michaels
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