Physics Physics Practice Problems Solutions Library

# Motional EMF Solutions Library

Access 23 Motional EMF video and text solutions to help you complete your homework. Need to revisit the concept? Watch our Motional EMF learn videos.

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23 solutions

Motional EMF

#### Q. A jet airplane with a 75.0 m wingspan is flying at 280 m/s. (a) What emf is induced between wing tips if the vertical component of the Earth's fiel...

Solved • Jul 20, 2020

Motional EMF

#### Q. Consider an unknown dry cell for which a potentiometer is balanced when the variable resistance is Rx = 1.7 Ω, while an alkaline standard cell with...

Solved • Jul 16, 2020

Motional EMF

#### Q. Consider a conducting rod of length 28 cm moving along a pair of rails, and a magnetic field pointing perpendicular to the plane of the rails.At wh...

Solved • Jul 15, 2020

Motional EMF

#### Q. A 10-cm-long wire is pulled along a U-shaped conducting rail in a perpendicular magnetic field. The total resistance of the wire and rail is 0.33 Ω...

Solved • Jul 14, 2020

Motional EMF

#### Q. A metal bar moves through a magnetic field. The induced charges on the bar are

Solved • Jul 14, 2020

Motional EMF

#### Q. An emf is induced by rotating a 1000-turn, 20.0 cm diameter coil in the Earth's 5.00 × 10–5 T magnetic field. What is the average emf induced, give...

Solved • Jul 14, 2020

Motional EMF

#### Q. This problem explores how a current-carrying wire can be accelerated by a magnetic field. You will use the ideas of magnetic flux and the EMF due t...

Solved • Jul 14, 2020

Motional EMF

#### Q. A 10cm long wire is pulled along a U shaped conducting rail in a perpendicular magnetic field. The total resistance of the wire and rail is 0.20 Ω....

Solved • Jun 2, 2020

Motional EMF

#### Q. The loop in the figure is being pushed into the 3.00 T magnetic field at 10.0 m/s. (a) The resistance of the loop is 2.46 Ω. What is the magnitude ...

Solved • Jun 2, 2020

Motional EMF

#### Q. The figure shows emf phasors a, b, and c.Part AFor each, what is the instantaneous value of the emf?Part BAt this instant, is the magnitude of emf ...

Solved • May 27, 2020

Motional EMF

#### Q. A scalloped hammerhead shark swims at a steady speed of 1.0 m/s with its 80 -cm-wide head perpendicular to the earth's 56µT magnetic field.What is ...

Solved • May 21, 2020

Motional EMF

#### Q. (a) An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner’s 2.00 T field with his fingers pointing...

Solved • May 20, 2020

Motional EMF

#### Q. The cube shown in the figure below, 50.0 cm on a side, is in a uniform magnetic field of B = 0.125 T , directed along the positive y-axis. Wires A,...

Solved • May 11, 2020

Motional EMF

#### Q. A bicycle generator rotates at 1900 rad/s, producing an 18.0 V peak emf. It has a 1.00 cm by 3.00 cm rectangular coil in a 0.770 T field.(a) How ma...

Solved • May 2, 2020

Motional EMF

#### Q. Which of the following will cause an induced current in a coil of wire?a) the constant field of the earth passing through the coilb) a magnet resti...

Solved • Apr 24, 2020

Motional EMF

#### Q. The earth's magnetic field strength is 5.0x10-5 T. How fast would you have to drive your car to create a 4.0 V motional emf along your 1.0 m -long ...

Solved • Apr 7, 2020

Motional EMF

#### Q. A 10 cm long zero resistance wire is pushed towards the 2.0 Ω resistor with a steady speed of 0.5 m/s as shown in the figure below. A magnetic fiel...

Solved • Apr 27, 2017

Motional EMF

#### Q. A metal bar is pulled to the right perpendicular to a uniform magnetic field. The bar rides on parallel metal rails connected through a resistor, a...

Solved • Mar 29, 2017

Motional EMF

#### Q. A square, 60-turn coil 10.0 cm on a side with a resistance of 0.920 Ω is placed between the poles of a large electromagnet. The electromagnet produ...

Solved • Mar 27, 2017

Motional EMF

#### Q. A conducting rod of length 0.20 m makes slides without friction on conducting metal rails, as shown in the sketch. The apparatus is in a uniform ma...

Solved • Jan 26, 2017

Motional EMF

#### Q. A conducting rod of length 0.20 m makes slides without friction on conducting metal rails, as shown in the sketch. The apparatus is in a uniform ma...

Solved • Jan 26, 2017

Motional EMF

#### Q. A metal bar is moving toward the bottom of the page, as shown in the sketch. The bar is in a uniform magnetic field B that is directed into the pag...

Solved • Jan 24, 2017

Motional EMF

#### Q. A jumbo jet with wing span (distance between the wing tips) of 30 meters is cruising with speed of 2000 km/hour. Suppose that the earth's magnetic ...

Solved • Dec 19, 2016