The electrical resistivity of three materials A, B, and C at 20°C is given below:
Material A: Resistivity \(10^{17} \Omega \, {m}\)
Material B: Resistivity \(44 \times 10^{-6} \Omega \, {m}\)
Material C: Resistivity \(1.62 \times 10^{-8} \Omega \, {m}\)
(i) Classify these materials as conductor, alloy, and insulator.
(ii) Give one example of each of these materials and state one use of each material in the design of an electrical appliance, say an electric stove or an electric iron.
Leaves of the sensitive plant move very quickly in response to ‘touch’. How is this stimulus of touch communicated and explain how the movement takes place?
Read the following sources of loan carefully and choose the correct option related to formal sources of credit:
(i) Commercial Bank
(ii) Landlords
(iii) Government
(iv) Money Lende