EXAMPLE 7.1 The conducting triangular loop in Figure 7.6(a) carries a current of 10 A. Find H at (0, 0, 5) due to side 1 of the loop. PRACTICE EXERCISE 7.1 Find H at (0, 0, 5) due to side 3 of the triangular loop in Figure 7.6(a). Answer: -30.63a, + 30.63a, mA/m. 10 A 0
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- Eddy currents can be induced only in metals that are not ferromagnetic, for example, copper and aluminium. Select one: True FalseA cylindrical solenoid 49 cm long with a radius of 7 mm has 325 tightly-wound turns of wire uniformly distributed along its length (see the figure). Around the middle of the solenoid is a two-turn rectangular loop 3 cm by 2 cm made of resistive wire having a resistance of 135 ohms. One microsecond after connecting the loose wire to the battery to form a series circuit with the battery and a 20 resistor, what is the magnitude of the current in the rectangular loop and its direction (clockwise or counter-clockwise in the diagram)? (The battery has an emf of 9 V.)The shunt capacitance accounts for losses due to the leakage current. Select one: True False
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