You use a ruler with a minimum scale 1 mm to measure a distance about 10 cm. Wha

Question

You use a ruler with a minimum scale 1 mm to measure a distance about 10 cm. What is the uncertainty of the measure? (Choice the best estimation) 1mm 1cm 0.02mm 0.5mm Consider a square loops the number of turn N is 5 and the length of side is 0.1 m. It is put into a space with a uniform magnetic field which is 2 T. The plane of loops is perpendicular to magnetic field and a current pass through the loops with 3 A. How many torque does the loops received in Nm. (Read the question carefully) 0 N.m 0.15 N.m 0.3 N.m 0.425 N.m

Explanation / Answer

7 uncertainity = minimum scale = 1 mm

8. torque = 0 magnetic field is perpendicular to plane

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