### Physics - Electric Charges and Fields

#### Question - 1

There are two types of electric charges positive charges and negative charges. The property which differentiates the two types of charges is

• A field of charge
• B amount of charge
• C strength of charge
• D polarity of charge

#### Question - 2

What will happen when we rub a glass rod with silk cloth?

• A Some of the electrons from the glass rod are transferred to the silk cloth.
• B The glass rod gets positive charge and silk cloth gets negative charge.
• C New charge is created in the process of rubbing.
• D both (a) and (b) are correct.

#### Question - 3

When a person combs his hair, static electricity is sometimes generated by what process?

• A Contact between the comb and hair results in a charge.
• B Friction between the comb and hair results in the transfer of electrons.
• C Deduction between the comb and hair.
• D Induction between the comb and hair.

#### Question - 4

Object may acquire an excess or deficiency of charge by

• A electric force
• B heating
• C shaking
• D by rubbing

#### Question - 5

The charge on an electron was calculated by

• B J.J. Thomson
• C Millikan
• D Einstein

#### Question - 6

A method for charging a conductor without bringing a charged body in contact with it is called

• A Magnetization
• B Electrification
• C Electrostatic induction
• D Electromagnetic induction

#### Question - 7

An object is charged when it has a charge imbalance,which means the

• A object contains no protons
• B object contains no electrons
• C object contains equal number of electrons and protons
• D object contains unequal number of electrons and protons

#### Question - 8

A conducting sphere is negatively charged. Which of the following statements is true?

• A The charge is uniformly distributed throughout the entire volume.
• B The charge is located at the center of the sphere.
• C The charge is located at the bottom of the sphere because of gravity.
• D The charge is uniformly distributed on the surface of the sphere.

#### Question - 9

The number of electrons present in -1 C of charge is

• A 6 x 1018
• B 1.6 x 1019
• C 6 X 1019
• D 1.6 x 1018

#### Question - 10

A cup contains 250 g of water. Find the total positive charge present in the cup of water

• A 1.34 x 1019 C
• B 1.34 x 107 C
• C 2.43 X 1019 C
• D 2.43 x 107 C