(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Suppose you drop an aluminum rod of length 1.0 m out of a window at a

equator, where the magnetic field of the Earth is 2.0x10-5 T. The rod stays oriented

horizontally as it falls.

2. Relevant equations

What is the induced EMF between the ends of the rod after 5

seconds?

3. The attempt at a solution

NO idea !

help please

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1. The problem statement, all variables and given/known data

A rectangular coil of 150 loops forming a closed circuit measures 0.2 m x 0.1

m. The resistance of the coil is 5 Ohm. The coil is placed between the poles of an

electromagnet, face on to the magnetic field. Suppose that when we switch the

electromagnet off, the magnitude of magnetic field decreases at the rate of 20 T/s.

2. Relevant equations

What is the induced EMF in the coil? What is the magnitude and direction of the induced

current?

3. The attempt at a solution

NO idea !

help please

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1. The problem statement, all variables and given/known data

The windings of a large electromagnet have an inductance of 10.0 H and a

resistance of 8.00 Ohm. The electromagnet is connected to the external EMF of 230 V.

2. Relevant equations

After electromagnet is switched on, how long does it take for the current to build up to

50% of its final value? What is the final, steady value of the current that is attained after

fairly long time?

3. The attempt at a solution

NO idea !

help please

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# Homework Help: Help me please i need solutions please !

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