Which of the two is paramagnetic : V (IV) or V (V) and why ?

11 kW of electric power can be transmitted to a distant station at (i) 220 V (ii) 22000 V. Which of the two transmission modes be preferred and why ? Support your answer with calculations.

I-V graph for a metallie wire at two different tempearture, T_(1)and T_(2) is as shown in the figure. Which of the two temperatures is lower and why ?

V- I graph for a metallic wire at two different temperature T_(1) and T_(2) is shown in figure. Which of the two temperature is higher and why?

Let V and I respresent, respectively, the readings of the voltmeter and ammetre shows in Fig. 6.34 , and let R_(V) and R_(V) be their equivalent resistances. Because of the resistances of the meters, the resistnce R is not simply equal to V//I . (a) When the circuit is connected as shows in Fig. 6.34 (a), shows that R = (V)/(I) - R_(A) Explain why the true resistance R is always less than V//I . (b) When the connections are as shows in Fig. 6.34 (b) Show that R = (V)/(I - (V//R_(V))) Explain why the true resistance R is always greater than V//I . (c ) Show that the power delivered to the resistor in part (i) is IV - I^(2) R_(A) and that in part (ii) is IV - (V^(2)//R_(V))

Among the following which species is/are paramagnetic (i) Sr^(2+) (ii) Fe^(3+) (iii) Co^(2+) (iv) S^(2-) (v) Pb^(2+)