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LAKHMIR SINGH & MANJIT KAUR-MAGNETIC EFFECT OF ELECTRIC CURRENT -Exercise
- State whether the following statement is true or false : An electric...
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- For Fleming's left-hand rule, write down the three things that are 90^...
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- What is the other name of the split ring used in an electric motor ?
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- Of what substance are the brushes of an electric motor made ?
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- In an electric motor, which of the following remains fixed and which r...
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- What is the role of the split-ring in an electric motor?
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- Fill in the following blanks with suitable words : (a) Fleming's Rul...
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- (a) A current-carrying conductor is placed perpendicularly in a magnet...
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- State Fleming's left-hand rule.
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- What is the principle of an electric motor ? Name some of the devices ...
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- (a) In a d.c. motor, why must the current to the coil be reversed twic...
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- (a) State what would happen to the direction of rotation of a motor if...
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- (a) What is an electric motor ? With the help of a labelled diagram, d...
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- In an electric motor, the direction of current in the coil changes onc...
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- An electron beam enters a magnetic field right angles to it as shown i...
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- The force experienced by a current-carrying wire placed in a magnetic ...
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- The force experienced by a current-carrying wire placed in a magnetic ...
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- A current flows in a wire running between the S and N poles of a magne...
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- A electric motor is a device which transforms :
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- A magnetic field exerts no force on
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