Introduction to electricity

How Benjamin Franklin contributed to electricity ?

• named two types of charges positive and negative

• stated that charges are atoms

• developed the electric current

Millikan found

• the fundamental charge of electron

• the resistance

• different types of oils

Materials in which electric charges move freely called ....

• insulators

• conductors

• semi-conductors

Materials in which electric charge do not move freely called .....

• insulators

• conductos

• Metalloids

What are perfect conductors ?

• superconductors

• semi-conductors

• metalloid

Semiconductors are used in integrated circuits and technology like .....

• Silicon

• Chlorine

• Sodium

Galvani developed the idea of conventional current

• True

• False

What is an electric current?

• type of charges per unit mass

• number of charges per unit time

• number of charges per unit length

Real current cased by the movement of .....

• protons

• neutrons

• electrons

What is Electric circuit?

• path for transmitting electric current

• path for transmitting electric resistance

• path for transmitting electric voltage