Long Questions Chap # 13 – Physics 10th

Capacitors are used in__________

A capacitor is a perfect insulator for __________

Electric potential is a __________

Electric field intensity is a vector quantity and its direction is___________

Which one of the following statements is correct?

The value of Coulomb’s constant K depends upon___________

The equivalent capacitance is greater than individual capacitance in _________

Two charged spheres are separated by 2mm. which of the following would produce the greatest attractive force?

Farad is defined as ___________

When capacitors are connected in parallel, their equivalent capacitance is equal to ______

Two 50µF capacitors are connected in parallel. The equivalent capacitance of the combination is _________

If 4µF and 2µF capacitors are connected in series, the equivalent capacitance is given by______

Which one of the following statements is correct?

The capacitance C of a capacitor is given by the relation __________

Variable capacitors are used in___________

The force per unit charge is known as a ___________

The space around the charge within which other charges are influenced by it. is called___

Force of attraction or repulsion acts between__________

Capacitance is defined as _____________

One electron volt is equal to ___________

• 1.6 x10^-19J
• 1.6x10¹⁹J
• 6.25x10^-18J
• 6.25x10¹⁸J

Which Option is Correct ?

In order to store the charge a device is used which is called ________

If the distance between the two charged bodies is halved, the force between them becomes______

The electric intensity at infinite distance from the point charge is_____________

A positive and negative charge are initially 4cm apart. When they are moved closer together so that they are now only 1cm apart, the force between them is __________

Which the correct statement?

Work done in bringing a unit positive charge from infinity to that point in an electric field is called __________

An object gains excess negative charge after being rubbed against another object___

If a glass rod is rubbed with a silk cloth, it receives charge by the process of _________

The electron energy is one electron volt when it is accelerated through a potential difference of ________

Parallel plate capacitor consists of two metal plates separated by___________

In fixed type of capacitors, the value of capacitance____________

An insulating rod is charged positively by rubbing. This is due to___________

Which of the following is commercial type capacitor?

Capacitors are used in resonant circuit that tune radios to particular frequency______

Electroscope is an instrument used for ________

The magnitude of the charge on the electron is ___________

• 1.2 x 10^-19 C
• 1.6 x 10^-19C
• 2.6 x 10^-19C
• 1.81 x 10^-19C

Which Option is Correct ?

The work done in moving a unit positive charge form one point to another against the eclectic field is a measure of ____________

The electric force of repulsion between two electrons at a distance of 1-m is ___________

• 1.8N
• 1.5 x 10^-9N
• 2.30 x 10^-27N
• 2.30x10^-27N

Which Option is Correct ?

The coulomb’s law is valid for the charges which are ___________

Study of charges at rest is called __________

An object gain excess negative charge after being rubbed against another object______

A region around the charge in which it exerts electrostatic force on another charge is called_____________

The potential difference between two points is one volt. The amount of work done in moving a charge of one coulomb from one point to another is __________

Which is incorrect for parallel capacitor?

• V₁=V₂=V₃=V
• Q=Q₁+Q=+Q₃
• C=C₁+C₂+C₃
• Q₁=Q₂=Q₃=Q

Which Option is Correct ?

Electric field lines______________

When an insulating rod is charged negatively, this is due to___________

A positive electric charge_________

Which one is the fixed capacitor?

When a glass rod is rubbed with a silk cloth, then________

Electroscope can be charge by the process___________________

Two uncharged objects A and B are rubbed against each other when object B is placed near a negatively charged object C, the two objects repel each other which of the following statements is true about object A?

SI unit of electric charge is________

In Mica capacitors the dielectric is__________

SI unit of electric intensity is_________

• Nm^-1
• NC^-1    
• Nm^-2
• Nm

Which Option is Correct ?

SI unit of K is ______________

• Nm²C
• Nm²C^-2
• N²m²C^-1
• None of these

Which Option is Correct ?

Electric field is strong when liens are __________

The spacing between the field lines shows the_______

A radio tuning capacitor is a_______________

Only _________ type charges exist.

Application of electrostatic is___________

__________at a point in an electric field is equal to amount of work done | in bringing unit positive charge from infinity to that point.

The value of K is _________

• 8.85 x 10⁹ Nm²C^-2
• 9 x 10⁹ Nm²C^-2
• 6.67 x 10⁹ Nm²C^-2

Which Option is Correct ?

Electric charges can be produced by rubbing a neutral body with __________

In variable capacitors, the value of capacitance can be___________

Force experienced by a unit positive charge placed at a point in the electric field is known as _____

Five Joules of work is needed to shift 10C is charge form one place to another. The potential difference between the places is ____________

If the distance peewee two charges is doubled, the electric force between them will become ____

A body can be charged by a _____________

Three capacitors C₁ C₂ and C₃ are connected in parallel as in the Fig. Their equivalent capacitance will be________

Electron volt is the unit of ___________

According to coulomb’s law, what happens to the attraction of two oppositely charged objects as their distance of separation increases?

Free electrons are ____________

A positive charge___________

Who established fundamental law of electric force between two stationary charged particles?

In the presence of a charged body an insulated inductor develops positive charge at one end and negative charges at other end, this process is called the_______

Which statement is true about electrical potential?

Which one of the following is correct?

• 1 µF = 10^-6F
• lρF = 10^-13F
• lρF =10^-6µF

Which Option is Correct ?

When you rub a plastic rod against your hair several times and put it near some bits of paper the pieces of paper are attracted toward it. What does this observation indicate?

Electric charge of 100µC is 13m apart from another charge 16.9µC. The force between them in Newton is____________

• 9 x 10⁷
• 0.09
• 90
• 9 x 10⁵

Which Option is Correct ?

The number of electrons in one coulomb charge is equal to_______

• 6.25 x 10¹⁹
• 1.6 x 10^-19
• Zero
• 6.2 x 10²¹

Which Option is Correct ?

SI unit of electric field intensity is ___________

Capacitor have different types depending upon__________

When capacitors are connected in series, their equivalent capacitance is equal to______

Metals are good conductors of electricity, because they have________

SI unit of capacitance is_________

Like charges always___________ each other.

If we run a plastic comb through hair and then bring it near shell pieces of paper. The comb________

In variable capacitors___________