Physics Numerical for 10th Class Chapter13

Electric field intensity is a vector quantity and its direction is___________

Variable capacitors are used in___________

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

Capacitor have different types depending upon__________

Metals are good conductors of electricity, because they have________

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 __________

The spacing between the field lines shows the_______

Farad is defined as ___________

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

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

A body can be charged by a _____________

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

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 ?

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

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

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

Which one is the fixed capacitor?

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

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

Electric field is strong when liens are __________

In variable capacitors___________

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

SI unit of capacitance is_________

Parallel plate capacitor consists of two metal plates separated by___________

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

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

A positive electric charge_________

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 ?

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?

A capacitor is a perfect insulator for __________

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

SI unit of electric field intensity is ___________

The equivalent capacitance is greater than individual capacitance in _________

Electroscope can be charge by the process___________________

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

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 __________

A positive charge___________

Capacitance is defined as _____________

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

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

A radio tuning capacitor is a_______________

One electron volt is equal to ___________

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

Which Option is Correct ?

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

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_______

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

Which one of the following statements is correct?

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?

The force per unit charge is known as a ___________

Like charges always___________ each other.

Which one of the following is correct?

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

Which Option is Correct ?

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

Electric field lines______________

In fixed type of capacitors, the value of capacitance____________

SI unit of electric charge is________

In Mica capacitors the dielectric is__________

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 ?

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

Which the correct statement?

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

The electric intensity at infinite distance from the point charge is_____________

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

Which one of the following statements is correct?

Free electrons are ____________

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

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 ?

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

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

Capacitors are used in__________

SI unit of electric intensity is_________

• Nm^-1
• NC^-1    
• Nm^-2
• Nm

Which Option is Correct ?

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

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

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

Study of charges at rest is called __________

SI unit of K is ______________

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

Which Option is Correct ?

Which of the following is commercial type capacitor?

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______

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 ?

Electron volt is the unit of ___________

The value of Coulomb’s constant K depends upon___________

Application of electrostatic is___________

Force of attraction or repulsion acts between__________

Only _________ type charges exist.

Which statement is true about electrical potential?

In variable capacitors, the value of capacitance can be___________