Question

The electrical resistivity of few materials is given below in ohm-meter. Which of these materials can be used for making element of a heating device?

a.6.84 x 10-8 b)1.60 x 10-⁸ c)1.00 x 10-⁶

d.2.50 x 10¹² e)4.40 x 10-⁸ f. 2.30 x 10¹⁷​

Answer 1

Answer:

The electrical resistivity of few materials is given below in ohm-meter. Which of these materials can be used for making element of a heating device? Elements with high resistivity can be used for making elements of a heating device. Therefore, C and E will be used to make heating devices.