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15
×
the force that makes the wire move is called ________________
motor effect
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15
×
what is the use of right hand rule in a solenoid?
to predict the direction of the north pole
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15
×
a region where magnetic force is felt
magnetic field
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15
×
name three metals that are attracted to magnet
steel, manganese, iron, nickel, cobalt
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15
×
give the formula for cost of energy used
cost = energy used X cost/kWh
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×
seesaw
Swap points!
Oops!
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star
Double points!
Okay!
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shark
Other team loses 25 points!
Okay!
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thief
Give points!
5
10
15
20
25
×
trap
No points!
Oops!
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shark
Other team loses 10 points!
Okay!
×
gift
Win 15 points!
Okay!
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banana
Go to last place!
Oops!
15
×
in Fleming's left-hand rule, thumb is used to find ______________
direction of force (motion) of the conductor
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15
×
In Fleming's left-hand rule, middle finger is used to find _________________
direction of current
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lifesaver
Give 25 points!
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gold
Win 50 points!
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gift
Win 15 points!
Okay!
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banana
Go to last place!
Oops!
15
×
the phenomenon of inducing current by a changing magnetic field is known as
electromagnetic induction
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15
×
name two ways of demagnetizing magnet
1. hitting and 2. heating the magnet
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15
×
direction of magnetic field
north to south
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15
×
a magnet that keeps its magnetic properties is called _______________
permanent magnet
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15
×
name three metals that are not attracted to magnet
aluminum, copper, gold
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15
×
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
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