Question 31: The electrical resistivities of four materials P, Q, R and S are given below : Which material will you use for making : (a) heating element of electric iron (b) connecting wires of electric iron (c) covering of connecting wires ? Give reason for your choice in each case. Lakhmir Singh Physics Class 10

Question 31: The electrical resistivities of four materials P, Q, R

1.	Question 31: The electrical resistivities of four materials P, Q, R and S are given below : Which material will you use for making : (a) heating element of electric iron (b) connecting wires of electric iron (c) covering of connecting wires ? Give reason for your choice in each case. Lakhmir Singh Physics Class 10
Answer» A) TUNGSTEN B) COPPER C) PLASTIC D)

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