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Why does a charged glass rod attract a p...

Why does a charged glass rod attract a piece of paper?

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A positively charged glass rod is brought close to a metallic rod isolated from ground, the charge on the side of the metallic rod away from the glass rod will be____ A. same as that on the glass rod and equal in quantity B. opposite to that on the glass of and equal in quantity C. same as that on the glass rod but lesser in quantity D. same as that on the glass rod but more in quantity

Answer the following question : In the following example, state whether the force is a contact force or non contact force : when a comb is rubbed against hair, small pieces of paper kept on a table get attracted to the comb.

Answer the following : Why does car uses a battery instead of a cell ?

Rub one end of a glass rod against a silk cloth. Due to the rubbing a small charge will get transferred from one object to the other. As a result both the objects will become somewhat charged. Suspend this rod freely in air with the help of a thread. Now charge another glass rod in the same manner and bring it near the suspended tod. What do you see?

Give reasons : Use your brain power! : Why does a charged balloon stick to a wall?

Do you have experience of the instances given below? : A plastic comb or ruler rubbed on dry hair attracts pieces of paper. : If we pass near a polyester curtain again and again, it gets attracted towards us. : If we rub a blanket with our hands and take it near a metal object, a spark is seen in the dark. : What is the cause of these effects?

Do you have experience of the instances given below? : A plastic comb or ruler rubbed on dry hair attracts pieces of paper. : If we pass near a polyester curtain again and again, it gets attracted towards us. : If we rub a blanket with our hands and take it near a metal object, a spark is seen in the dark. : What do the above observations tell us?

CHETANA PUBLICATION-Electrostatics-Exercise
  1. Why does a charged glass rod attract a piece of paper?

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  2. Calculate the total flux coming out from a closed surface enclosing a ...

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  3. A charge of 6q is placed at the centre of a cube of side 2cm. What is ...

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  4. Two charges - q and + q are located at points A(0,0, -a) and A(0,0, + ...

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  5. If 20J of work is to be done in moving a charge of 100C from A to B, w...

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  6. The electric potential at 45cm from a point charge is +100V. what is t...

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  7. Two point charges 4muC and -2muC are separated by a distance of lm in ...

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  8. The electric field at a point due to a point charge is 60 N//C and the...

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  9. Twenty seven charged water droplets each with a diameter of 2mm and a ...

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  10. Two point charges + 0.2muC and 0.01muC are placed 10cm apart. Calculat...

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  11. The kinetic energy of a charged particle decreases by 10J as it moves ...

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  12. The capacity of a capacitor becomes 20muF when gap between the capacit...

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  13. Calculate the energy stored in a capacitor of 6muF when it is charged ...

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  14. A 800 muF capacitor is charged by a 100V battery. After some time, the...

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  15. Net capacitance of three identical capacitors in series is 1muF. What ...

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  16. The capacity of a parallel plate air condenser is 8 muF. When air is r...

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  17. Calculate the capacity of a sphere of radius 1000m.

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  18. Two capacitors each of capacitance 5muF and a battery of emf 240 volt....

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  19. Figure shows a network of five capacitors connected to a 100V supply. ...

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  20. Net capacitance of three identical capacitors in series is 1muF. What ...

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  21. Capacity of a capacitor is 3muF. A slab of dielectric constant 4 is in...

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