Question

Which wire, when current flows through it, would be surrounded by the strongest magnetic field?

Answer 1

Answer:

The strongest magnetic field is in (c) .

Explanation:

We know that moving current creates the magnetic field around a wire. The magnetic field of a wire depends on the number of turns. Mathematically, it can be related as :

$B\propto n$

where,

n is the number of turns

When the no of turns around a wire increases, the associated electric field increase. Hence, the magnetic field will be strongest.

Hence, the correct option is (c).

Answer 2

The wire with the highest number of turns will have the strongest magnetic field. Option C is correct.

What is an electromagnet?

An electromagnet is formed when current flows in a looped metal wire. A loop wire is working as a magnet with two poles.

According to Faraday, the number of loops or turns is directly proportional to the strength of the magnetic field.  

B∝n

Where,

$B$ - the strength of the magnetic field

$n$ - number of turns

Therefore, the wire with the highest number of turns will have the strongest magnetic field.

Learn more about electromagnet:

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