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Concept

# Problem: 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 of the current in the loop? (b) What is the direction of the current in the loop?

###### FREE Expert Solution

Motional emf:

$\overline{){{\mathbf{\epsilon }}}_{\mathbf{m}\mathbf{o}\mathbf{t}}{\mathbf{=}}{\mathbf{v}}{\mathbf{B}}{\mathbf{L}}}$

Ohm's  law:

$\overline{){\mathbf{V}}{\mathbf{=}}{\mathbf{i}}{\mathbf{R}}}$

(a)

Combining motional emf and Ohm's law expressions:

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###### Problem Details

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 of the current in the loop?

(b) What is the direction of the current in the loop?

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Motional EMF concept. You can view video lessons to learn Motional EMF. Or if you need more Motional EMF practice, you can also practice Motional EMF practice problems.