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Answer these odd one out . With reason

Answer these odd one out . With reason H. Encircle the odd one out. Give reasons for your choice. 1. Electric bell, telephone, bullet train, magnetic compass and electric motor 2. Inverter battery, AC generator, household electric supply and transformer 3. Bar magnet, earth's magnet, magnetic compass, solenoid and current-carrying coil I. Give reasons for the following.

Dear student,

(a) Magnetic compass because all others are the application of electricity.

(b) Inverter battery as all other are using  AC source, where as battery gives DC output

(c) Earth's Magnet because all other things have magnetic property due to magnetism .
 
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WHAT
 
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OK
 
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Done 
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Nice question 
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1. magnetic compass -becoz rest all use electricity
2. transformer- becoz rest are the forms of UPS
2. magnetic compass - becoz rest do not tell the directions
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2 transformer the other items can use to small areas whereas transformer ca use for an 
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