Question 5: The loop in the figure below is being pushed into the 0.20 T magnetic field at 50 m/s. The resistance of the loop is 0.10 02. What is the magnitude of the current in the loop? 50 m/s ● B=0.20 T ● 5.0 cm ●
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- QUESTION 1 A coil of ten turns of area 0.01 m2 and resistance 5 Q is placed perpendicularly inside a magnetic field whose intensity and direction changes as given in the figure. What is the magnitude of the flux of magnetic field crossing the area of the coil at time = 6 sec? B(T) 0.1 0.3 0.5 0.8 0.9 t(s) -1 -2 O 2 Wb O 0.2 Wb O 20 Wb O 0.02 Wb O none of theseIf I have a magnetic field pointing upwards with magnitude 8 T, what is the magnetic flux through a closed loop of wire which is 2 m x 3 m? The plane is at a 30 degree angle with the xy plane. 0 Tm2 24 Tm2 48 Tm2 41.56 Tm2A 1450 turn coil of wire, 6.16 cm in diameter, is in a magnetic field that drops from 0.723 T to 0 T in 41.9 ms. The axis of the coil is parallel to the field. What is the emf (in V) of the coil?
- You wish to produce a 10 V potential difference along the length of a 0.2 m long metal rod by moving it through a magnetic field. If the field has a strength of 2 T, what minimum speed would be needed? 2 m/s 10 m/s 20 m/sA 20 turn circular loop with diameter 3 cm is placed in a magnetic field of strength 7 T such that the loop’s area vector is parallel to the magnetic field. The magnetic field is reduced to 0 T over some time and this generates a constant voltage of 5 V. How long did it take for the magnetic field to reduce to 0? 3.23 s 15.32 s 0.0198 s 0.0389 s None of the aboveThe figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is R = 6.20 Q, and a 2.50-T magnetic field is directed perpendicularly downward, into the page. Let = 1.20 m. x * * Bin xx * X X * R x x x x x * * x X xxxxxx x x X x X X x * x XXXX * F app x X * (a) Calculate the applied force required to move the bar to the right at a constant speed of 2.50 m/s. N (to the right) (b) At what rate is energy delivered to the resistor? W
- The loop in (Figure 1) is being pushed into the 0.70 T magnetic field at 45 m/s. The resistance of the loop is 0.60 $2. Figure B 5.0 cm 1 of 1 Part A What is the magnitude of the current in the loop? Express your answer with the appropriate units. ▸ View Available Hint(s) I = Submit Part B Value clockwise μà What is the direction of the current in the loop? ▸ View Available Hint(s) counterclockwise Submit Provide Feedback By ? Units= A single-turn circular loop has a radius of 25 cm, it is placed in a magnetic field of B 3.5 T which is perpendicular to the plane of the loop, see the figure below. The loop is reshaped into a perfect square without stretching the length of the loop. It takes 0.43 s to reshape the loop. What is the magnetic flux through the loop before and after it is reshaped? B X X X X X X X X X X X X X x x The final flux, Of = 5 x X X X X X X The initial flux, ¡ = 0.0000006 X Units mWb Х Х The induced emf, Emf = 34 X Units mWb x X X X What is the magnitude of the average induced emf in the loop during the reshaping process? X Units mV хх Question Help: Message instructor Post to forumA circular coil enclosing an area of 140 cm? is made of 210 turns of copper wire (shown in the figure below). The wire making up the coil has no resistance; the ends of the wire are connected across a 3.00-N resistor to form a closed circuit. Initially, a 1.20-T uniform magnetic field points perpendicularly upward through the plane of the coil. The direction of the field then reverses so that the final magnetic field has a magnitude of 1.20 T and points downward through the coil. If the time interval required for the field to reverse directions is 0.200 s, what is the average current in the coil during that time? R