Thermal and Electrical conductivity

A copper block and air mass having similar dimensions are subject of symmetrical heat transfer from once face each block . the other face of that block will be reaching to the same temperature at a rate

• Faster in air block

• Faster in copper block

• Equal in both

• Cannot be predicted

In a complete electrical circuit, which materials do electricity permits flow through?

• Electrical insulators

• Only leads or wires

• Electrical conductors

• Only batteries

Assertion (A) nonmetals are having higher thermal conductivity than metals Reason (R) Free electrons in the metals and higher than those of non metals

• Both A and R are true and R is correct explanation of A

• Both and A and R are true but R not a correct explanation of A

• A is true and R is false

• A is false and R is true

What does an electrical insulator?

• It does not allow electricity to pass through it easily

• It does not allow heat to travel through it easily

• It allows heat to travel through it easily

• It allows electricity to pass through it easily

In which one of the following is the heat energy propagation minimum due to conduction heat transfer

• Air

• Lead

• Copper

• Water

Which of these is a good electrical conductor?

• Water

• Sweat

• The human body

• All of the above

Most metals are good conductor of heat because of

• Transport of energy

• Free electrons and frequent collision of atoms

• Capacity to absorb energy

• Capacity to hold mass.

Ions are charged particles. They are formed when an atom

• Loses electrons

• Gains electrons

• Shares electrons

• Gains or loses electrons

What Is The Difference Between Heat And Temperature?

Solids make better ______________________ Than Liquids

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