THERMAL CONDUCTORS ANG INSULATORS

In a cold environment, rubber shoes will keep the foot warm. the reason beghind this is....

• A. Rubber is a good conductor

• B. rubber is a semiconductor

• C. Rubber is insulator

• D. all of the above

which of these is a good thermal conductor?

• A. PLASTIC

• B. WOOD

• C. ALUMINUM

• D.STYROFFOAM

WHICH IS A GOOD THERMAL INSULATOR?

• A. metal in a radiator

• B. aluminum in a cooking pot

• C. thermos container

• D. wires in a toaster

there are two objects. object A is covered with a wooden bowl while object B is covered with wax coated material. Find the object which will get heat when heated both the objects?

• A. object covered with wax coated material

• B. object covered with wood bowl

• C. both

• D. none of the above

what is the inverse of resistance?

• A. resistance

• B. conductance

• C. inductance

• D. none of these

which of the following is the most conductive material?

• A. copper

• B. silver

• C.iron

• D. silicon

WHICH OF THE FOLLOWING IS THE ODD ONE?

• A. WOOL

• B. COPPER

• C. PLASTIC

• D. GLASS

WHAT IS THE NAME OF THE MATERIAL WITH ZERO RESISTANCE?

• A. SEMICONDUCTOR

• B. CONDUCTOR

• C. INSULATOR

• D. SUPER CONDUCTOR

The resistance of the conductor is directly proportional to?

• A. LENGTH

• B. AREA OF CROSS-SECTION

• C. TEMPERATURE

• D. NONE OF THE ABOVE

thermal conductivity is denoted by?

• A. T

• B. C

• C. TC

• D. K