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Earn 100

List three properties of a magnet.

Important Questions on Electricity: Magnetic and Heating Effects

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What is a magnetic field?
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The magnetic field intensity (B) at a distance 'r' from a long straight conductor carrying a steady current varies with 'r' as shown in figure: 
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Unit of magnetic flux is
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Science>Physics>Electricity: Magnetic and Heating Effects>Magnetic Effects of Electric Current
SI unit of magnetic field is
MEDIUM
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State the differences between magnetic field and magnetic field line.
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The area surrounding a magnet where its force can be detected, is called 
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Which of the following is NOT correct for magnetic filed lines?

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The strength of magnetic field
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A magnet attracts :
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Science>Physics>Electricity: Magnetic and Heating Effects>Magnetic Effects of Electric Current
Jigyasa has found a piece of material. She wants to find out if it is a magnetic material. What should she do? How can she find out?
 
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Science>Physics>Electricity: Magnetic and Heating Effects>Magnetic Effects of Electric Current
Which of the following materials is made of a non-magnetic substance? 
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Substances which are attracted by a magnet are called
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Give some examples of magentic, and non-magnetic materials. 
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Will a strong magnet attract a piece of stainless steel? Why?
MEDIUM
Science>Physics>Electricity: Magnetic and Heating Effects>Magnetic Effects of Electric Current
Name two magnetic materials.
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Science>Physics>Electricity: Magnetic and Heating Effects>Magnetic Effects of Electric Current
Magnet is found in rocks containing
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A magnet can attract a paper clip made of steel.
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Science>Physics>Electricity: Magnetic and Heating Effects>Magnetic Effects of Electric Current
column A column B
a. Poles 1. Non-magnetic material
b. Paper 2. Finding direction
c. Iron 3. Magnetic rock
d. Compass 4. Exist in pairs
e. Magnetite 5. Magnetic material

 

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Science>Physics>Electricity: Magnetic and Heating Effects>Magnetic Effects of Electric Current
What are non-magnetic substances? Give two examples.
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Science>Physics>Electricity: Magnetic and Heating Effects>Magnetic Effects of Electric Current
A magnet will pick up a: