Question

LIIMIDIU
50. A metallic conductor has loosely bound electrons called
free electrons. The metallic conductor is
(a) negatively charged
(6) positively charged
(c) neutral
(d) either positvely charged or negatively charged.
51. The number of electrons constituting 1 coulomb charge
IS

(a) 6.25 x 10-19
(6) 6.25 x 1019
(c) 6.25 x 10-18
(d) 6.25 x 1018
52 Resistance of a metallic conductor
(a) increases with the increase in temperature
(b) increases with the decrease in temperature
(c) decreases with the increase in temperature
(d) none of these.
53, Resistance of a conductor varies
(a) inversely proportional to its length
(b) inversely proportional to square of its length
(c) directly proportional to its length
(d) directly proportional to square of its length.
54 Resistivity of a metallic wire depends upon
(a) its length
(6) its shape
(c) its thickness (d) nature of material​

Answer 1

Answer:

50- metallic conductor is electrically neutral since equal protons & electrons / positive & negative charge present

51-d relation of q =ne use and get answer

52 - b since collisions start increasing with temperature

53- c

54- d since its PROPERTY OF MATERIAL..

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