The power rating of an electric motor that draws a current of 3 A when operated

Question

The power rating of an electric motor that draws a current of 3 A when operated at 1 20 v 40 W 0.36 kW 0 54kW 1.08 kW A current is flowing east along a power line. If we neglect the earth's field, the direction of the magnetic field below it is north east south west When a magnetized iron bar is strongly heated, its magnetic field becomes weaker becomes stronger reverse its direction is unchanged An electron is moving north in a region where the magnetic field is south. The magnetic force exerted on the electron is: zero up down cast west A proton traveling due east in a region that contains only a magnetic field experiences a vertical upward force away from the surface of the earth What is the direction of the magnetic field ? north cast south west down A beam of electrons is sent horizontally down the axis of a tube to strike a fluorescent screen at the end of the tube. On the way. the electrons encounter a magnetic field directed vertically downward. The spot on the screen will therefore be deflected: upward downward to the right as seen from the electron source to the left as seen from the electron source not at all A current is flowing north along a power line parallel to the ground. The magnetic field

Explanation / Answer

36) Power rating = 3 * 120 = 360 W = 0.36 kW

37)    North

38) becomes waker .

39)    Zero

40)    south

41) to the right as seen from the electron source .

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