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name the direction of current and magnetic field (use right-hand rule)
1. current to the right, 2. magnetic field out of the paper
a region where magnetic force is felt
magnetic field
a magnet that keeps its magnetic properties is called _______________
permanent magnet
name three metals that are not attracted to magnet
aluminum, copper, gold
name three metals that are attracted to magnet
steel, manganese, iron, nickel, cobalt
name two ways of demagnetizing magnet
1. hitting and 2. heating the magnet
what is the use of right hand rule in a solenoid?
to predict the direction of the north pole
the force that makes the wire move is called ________________
motor effect
direction of magnetic field
north to south
give the formula for cost of energy used
cost = energy used X cost/kWh
In Fleming's left-hand rule, middle finger is used to find _________________
direction of current
in Fleming's left-hand rule, thumb is used to find ______________
direction of force (motion) of the conductor
name the use of Fleming's left-hand rule
to show the direction of force, current, and magnetic field
Name three ways to increase the induced current in the set - up shown.
1. move the magnet faster, 2. use a stronger magnet, 3. using more turns of wire in the coil
the phenomenon of inducing current by a changing magnetic field is known as
electromagnetic induction
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