physics class 10 chapter 1

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 ?

Electric field lines______________

The electric intensity at infinite distance from the point charge 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 ?

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

Capacitors are used in__________

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

One electron volt is equal to ___________

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

Which Option is Correct ?

SI unit of K is ______________

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

Which Option is Correct ?

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

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 __________

A body can be charged by a _____________

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

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 ?

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

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

A positive charge___________

Which one of the following statements is correct?

SI unit of electric field intensity is ___________

Free electrons are ____________

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

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

SI unit of capacitance is_________

Electric field intensity is a vector quantity and its direction is___________

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

Farad is defined as ___________

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

A positive electric charge_________

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

Capacitor have different types depending upon__________

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

Metals are good conductors of electricity, because they have________

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 ?

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

Electroscope is an instrument used for ________

Which of the following is commercial type capacitor?

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

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 ?

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

The value of Coulomb’s constant K depends upon___________

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 __________

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

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 __________

Which one of the following statements is correct?

Capacitance is defined as _____________

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

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

Only _________ type charges exist.

Electric potential is a __________

Which the correct statement?

The equivalent capacitance is greater than individual capacitance in _________

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

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?

In variable capacitors, the value of capacitance can be___________

Study of charges at rest is called __________

Electron volt is the unit of ___________

Which one is the fixed capacitor?

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 Mica capacitors the dielectric is__________

Which statement is true about electrical potential?

Like charges always___________ each other.

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

In fixed type of capacitors, the value of capacitance____________

In variable capacitors___________

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

SI unit of electric intensity is_________

• Nm^-1
• NC^-1    
• Nm^-2
• Nm

Which Option is Correct ?

Force of attraction or repulsion acts between__________

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

A radio tuning capacitor is a_______________

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

Electroscope can be charge by the process___________________

The force per unit charge is known as a ___________

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

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

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

The spacing between the field lines shows the_______

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

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

Electric field is strong when liens are __________

Application of electrostatic is___________

Which one of the following is correct?

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

Which Option is Correct ?

Variable capacitors are used in___________

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

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

Parallel plate capacitor consists of two metal plates separated by___________

SI unit of electric charge is________

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_______