5) A conducting bar is sliding with a constant velocity v along two conducting rails in the -y direction. Find an expression for the induced motional emf. what is the direction of the induced current? 122° 122°
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- The magnetic flux through a 730-turn coil depends on time according to (1) = 4x 10- Tm 2 in which the time is in seconds. Calculate the absolute value of the emf induced at time t = 2.88 s, in volts. s2A conducting bar sits on top of two parallel rails. A uniform magnetic field B is steady and directed to the right. The bar moves upward with velocity v. What is the polarity of the induced emf in terminals X and Y? X Y O X and Y are at the same potential. X is positive and Y is negative. O Y is positive and X is negative. 1-17. A generator uses a coil that has 95 turns and a 0.750-T magnetic field. The frequency of this generator is 50.0 Hz, and its emf has an rms value of 220 V (Vms). Assuming that each turn of the coil is circular, determine the length of the wire from which the coil is made. m
- 2. An AC generator has 75 rectangular loops on its armature. Each loop is 14.0 cm long and 10.0 cm wide. The armature rotates at 1300 rpm about an axis parallel to the long side. If the loop rotates in a uniform magnetic field of 0.700 T, which is perpendicular to the axis of rotation, what will be the maximum output voltage of this generator? Volts10. A generator uses a coil that has 100 turns and a 0.450-T magnetic field. The frequency of this generator is 60.0 Hz, and its emf has an rms value of 110 V (Vrms Assuming that each turn of the coil is circular, determine the length of the wire from which the coil is made. mA 1.95 m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 14.8 m/s. The vertical component of Earth's magnetic field in this region is 40.0 µµT directed downward. Calculate the induced emf between the ends of the wire and determine which end is positive. magnitude mv positive end ---Select-- v Need Help? Read It
- 4.) In the circuit shown, the initial voltage across the 10 microFarad capacitor is 12V. The solenoid has an inductance of 0.7 H. There is no resistance. a) Find the charge on the capacitor 1.0 millisecond after the switch S is closed. b) At what time will the current in the solenoid reach its maximum value? c) What is the maximum energy stored in the magnetic field of the solenoid?Problem 1. The wire is moving to the left with a linear velocity of 10 m/s as shown. Determine the magnitude and direction of the emf induced in the wire. Include a brief explanation. X X 45° Xv = 10 m/s 1=0.25 m X, X B= 02 T, into the page XE X