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PHYSICS REVISION TEST Total:20, , 1. On what factor does the resistance of a conductor depend? 2, marks:, , 2. How many bulbs of 80 should be joined in parallel to draw a, current of 2A from a battery of 4 V? 3marks, , s, , . (a) State ohm’s law?, , (b) The value of (!) current following through a conductor for the, corresponding valves of (V)potential difference are given below, , , , Ampere) [0s 10 15 [zs 3, vivo) Tt 2 3 45 3, , , , , , , , Plot a graph between V and | and also calculate resistance. 5, marks., , 4.1n the given figure what is ratio of ammeter reading when J is, connected to A and then to B, , ‘y, y i, “, ee 5 marks, , 5. Explain the principle, construction and working of an electric, motor with a help of labelled diagram? 5 marks
