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Q34. The electrical resistivities of three materials P, Q, and R are given below: P = 2.3×103 Ωm Q = 2.63×10-8 Ωm R = 1.0×1015 Ωm Which material will you use for making? a) Electric wires b) Handle for soldering iron
Q34. The electrical resistivities of three materials P, Q, and R are given below: P = 2.3×103 Ωm Q = 2.63×10-8 Ωm R = 1.0×1015 Ωm Which material will you use for making? a) Electric wires b) Handle for soldering iron
CBSE | Class 10 | Electricity | Lakhmir Singh | Physics
Q34. The electrical resistivities of three materials P, Q, and R are given below: P = 2.3×103 Ωm Q = 2.63×10-8 Ωm R = 1.0×1015 Ωm Which material will you use for making? a) Electric wires b) Handle for soldering iron

Answer:

a) For making of the electric wires, Q = 2.63×10-8 Ωm can be used because this material has a very low resistivity

b) For making of the handle for soldering iron, R = 1.0×1015 Ωm can be used because this has a very high resistivity

i

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