f 24 0 ohms, bulb 8 has a resistance of 192 You have three light bulbs; bulb A h
ID: 2036293 • Letter: F
Question
f 24 0 ohms, bulb 8 has a resistance of 192 You have three light bulbs; bulb A has a resistance o ohms, and bulb C ha amount of time in a and magnetic field strength are same. Rank the setups in des much work the hand in the drawing must do (largest amount of 9. used for the same setup like the one shown in the drawing. In each case the speed of the rod work first), , B, C (b) A, C, B must do (largest amount of work first B,C (b) A, C, B s a resistance of 144 ohms. Each of the three bulbs is u cending order, according to how (c) B, C, A (d) 8, A, C (d) C, B, A P- x x x L x 10. A square has length 0l3 m, and current in the coil is 12 A.Determine the magnitude of the magnetic force on each of the four sides. coil of wire containing a single turn-js placed in uniform 0.25 T magnetic field. Each side
Explanation / Answer
9)
Bulb with low resistance will cause high current to flow through it
relation between force and current is F=BiL
so the force is directly preportional to current
hence the bulb with low resistance shows greater force
so the correct option is
C,B,A
10)
on two sides that are perpendicular the force
= F = bil sin 90 = 0.25 * 0.3 * 12 * 1 = 0.9 N
on two parallel sides = F = Bil sin 180 = 0
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