The field of a solenoid is most like the field of a: long, straight wire single bar magnet horseshoe magnet single pole
2 answers:
Answer:
Single bar magnet
Explanation:
As we know that magnetic field of solenoid inside the solenoid is strong and given by formula
here we know
L = length of solenoid
i = current in the coil
now as we observe the field outside the solenoid the magnetic field will start decreasing as we go far away from the end.
so strength of magnetic field will be more near the end and start decreasing as we move away from it
this all characteristics are similar to the magnetic field of a bar magnet
so this solenoid is similar to a bar magnet
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But Ohm's law:
tells us that if the equivalent resistance decreases, the total current in the circuit increases. The power dissipated through the circuit (and so, the heat produced) depends on the square of the current:
therefore if there are too many devices connected in parallel, this can be a problem because there could be too much power dissipated (and too much heat) through the circuit.