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physics

theAlixer
in Homework Help

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Hi, i would like some help on this question that was given to me for revision for my exam in a couple of days.

 

 

A 20,000V overhead power line carries 50kW of power.

 

Calculate the strength of the magnetic field at a point 12 metres away from the power line and give the unit for your answer.

the value of k is 2.0 x 10-7 TmA-1

(to answer this question you will need to first calculate the current in the wire)

That is what the whole question says. I haven't learnt anything like this, this year so please help me out.

thanks in advance.

 

 

 

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