Short Questions Chap # 13 – Physics 10th

Metals are good conductors of electricity, because they have________

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

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

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 ?

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

Capacitors are used in__________

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 ?

Application of electrostatic is___________

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

A positive electric charge_________

SI unit of electric charge is________

A body can be charged by a _____________

Which the correct statement?

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 ?

Free electrons are ____________

Electroscope can be charge by the process___________________

SI unit of electric intensity is_________

• Nm^-1
• NC^-1    
• Nm^-2
• Nm

Which Option is Correct ?

A capacitor is a perfect insulator for __________

In variable capacitors, the value of capacitance can be___________

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

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

In Mica capacitors the dielectric 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 potential is a __________

In variable capacitors___________

SI unit of electric field intensity is ___________

Force of attraction or repulsion acts between__________

Farad is defined as ___________

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

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 __________

One electron volt is equal to ___________

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

Which Option is Correct ?

Electron volt is the unit of ___________

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

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

Which one of the following statements is correct?

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

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

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

Which one of the following is correct?

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

Which Option is Correct ?

Which of the following is commercial type capacitor?

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

Electroscope is an instrument used for ________

Electric field is strong when liens are __________

Which statement is true about electrical potential?

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

Variable capacitors are used in___________

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

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

SI unit of K is ______________

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

Which Option is Correct ?

A radio tuning capacitor is a_______________

Electric field lines______________

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?

Which one is the fixed capacitor?

In fixed type of capacitors, the value of capacitance____________

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

SI unit of capacitance is_________

The force per unit charge is known as a ___________

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

Only _________ type charges exist.

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

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

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_______

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

A positive charge___________

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?

Study of charges at rest is called __________

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

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

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 ?

Capacitance is defined as _____________

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

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

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 __________

Capacitor have different types depending upon__________

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

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

The equivalent capacitance is greater than individual capacitance in _________

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

The value of Coulomb’s constant K depends upon___________

The electric intensity at infinite distance from the point charge is_____________

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

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 ?

Parallel plate capacitor consists of two metal plates separated by___________

Electric field intensity is a vector quantity and its direction is___________

The spacing between the field lines shows the_______

Like charges always___________ each other.

Which one of the following statements is correct?

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