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richardive
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This question is about Electric Fields. Fill in the blanks.
Symbol ____
Caused by____
Affects ____
Two types of ____
Simple force rule ____
- Symbol: E
- Caused by: ChargesAffects: ChargesTwo types of: Charges- Postive/NegativeSimple force rule: Like charges repel, unlike charges attract.
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This question is about Magnetic Fields. Fill in the blanks.
Symbol ____
Caused by____
Affects ____
Two types of ____
Simple force rule ____
- Symbol: B
- Caused by: Magnets (or electric currents)
- Affects: Magnets (or electric currents)
- Two types of: Poles (North and South)
- Simple force rule: Like poles repel, unlike poles attract.
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How are strength and direction of the force felt in a magnetic field represented using field lines?
- The direction of the force is shown by the direction of the field lines.
- The strength of the force is shown by how close the lines are to one another.
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What are three differences between electric fields and magnetic fields?
- A magnet does not feel a force when placed in an electric field.
- A positive charge does not feel a force when placed stationary in a magnetic field.
- Isolated charges exist whereas isolated poles do not.
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What hand rule is used to find the direction of field lines when direction of a current is given?
- The Right Hand Rule.
- The thumb represents current direction.
The curled fingers represents the direction of field lines.
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Describe the motor effect
- When a current-carrying wire is placed in a magnetic field the magnetic interaction between the two results in a force.
- The direction of this force is at right angles to the plane that contains the field and the current.
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A single charge moving through a magnetic field also feels a force in exactly the same way that a current feels a force.
List four factors a force on a moving charge proportional to.
- The magnitude of the magnetic field, B.
- The magnitude of the charge, q.
- The velocity of the charge, v.
- The sine of the angle, θ, between the velocity of the charge and the field.
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Find the equation for magnetic force on a moving charge using the variables B(magnetic field), q (charge), v (velocity of charge), and sinθ (angle between velocity of charge and field.
Rearrange the equation to find an equation for magnetic field, B.
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Outline what each finger in Flemings left hand rule represents.
- Thumb represents Magnetic Force.
- Index represents Field
- Middle represents Current
Abbreviation: Manchester Football Club, or Mother Fucking Cunt.
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Experiments show that 
What does each letter represent? Rearrange the equation to find an equation for B.
- B is the magnitude of the magnetic field
- I is the magnitude of the current
- L is the length of the current within the magnetic field
 is the sine of the angle between the field and current.
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Name two different units used to represent magnetic field strenth.
- Tesla (T)
- Wieber (
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