A 0.360-m-long metal bar is pulled to the left by an applied force F. The bar rides on parallel metal rails connected through a 45.0- Ω resistor so the apparatus makes a complete circuit. You can ignore the resistance of the bar and rails. The circuit is in a uniform 0.650-T magnetic field that is directed out of the plane of the figure. At the instant when the bar is moving to the left at?

A square loop,10.0cm on a side, is placed aroundthe center of a long solenoid which has 1500 turns of wire per meter. Thediameter of the solenoid is 9.00cm. The square coil has a resistance of 8.00. A cross section of the setup is shown toright. a.Determine the magnitude and the direction of the magnetic field inside the solenoid if it has a current of I=5.00 Amps in the direction shown. b.The initialcurrent through the solenoid is zero, at t =0 the current in the solenoid begins increasing according to the formulaI(t)=C1t2whereC1=5.00Amp/s2. Determine the magnitudeanddirectionof the current in the square coil at a time of .600 seconds.

A circular coil with radius 0.564 m has 50 turns of wire in it. The total resistance of the coil is R and it is sitting in a perpendicular magnetic field of 10 T. As the magnetic field is ramped to zero over a period of 2 s, a 5.0 A current is induced in the coil. What is R? Hig Ο 10 Ω 15 Ω 30 Ω

A helicopter (see figure below) has blades of length 2.80 m; extending out from a central hub and rotating at 3.40 rev/s. If the vertical component of the Earth's magnetic field is 50.0 μT, what is the magnitude of emf induced between the blade tip and the center hub? mV Sascha Hahn/Shutterstock.com

A circular piece of wire with radius 0.89 m has a 84.9 T magnetic field passing through. What is the maximum magnetic flux that can pass through this ring?

what is the answer??! help!

A 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 above

A 2 meter-long bar is being moved to the right at a constant speed. The bar is sliding on aframe that includes a resistor with R = 3.25 Ω. There is also a uniform 5.75-T magneticfield, directed into the page. At what speed should the bar be moved to produce a currentof 0.800 A in the resistor

A 0.25 m long solenoid contains 104loops of wire. What current will be necessary to produce a 0.5 T magnetic field inside the solenoid?

The magnetic field inside an air-filled solenoid 37 cm long and 2.1 cm in diameter is 0.75 T. Approximately how much energy is stored in this field?