Question

How many paperclips did the 20-loop coil of wire pick up, compared to the 40-loop coil?

Answer 1

Answer:

Explanation:

. An electric current moving through a loop of wire makes an electromagnet. ... paperclips they thought the electromagnet would pick up with 20, 40, and 60 coils. ... that if more coil is added to the nail, the more paperclips will be picked up.

 

PLZ MARK ME BRAINLIEST

Answer 2

The ratio of the number of paper clips picked by the 20-loop and 40-loop coils is 1 : 2. Thus, the paper clips picked by 20-loop coil is half that of the 40-loop coil.

Solenoid :

• In general, a Solenoid is referred to as a current-carrying coil
• It is an electromagnet, as it generates both electric and magnetic fields within it
• It has a helical coil of wire with a length substantially greater than the diameter.
• It generates a controlled value of the magnetic field as an electric current is passed through it.
• The magnetic field strength 'B' of a solenoid coil of length 'L', current 'I', and number of loops 'N' is given as :

                        $B = (u_{0}NI)L$

                        $u_{0} :$ Magnetic Constant

Thus, the strength of the loop coil 'B' is directly proportional to the number of turns i.e. 'N'.

                         $B_{1} / B_{2} = N_{1} / N_{2}$

Here, in the first case, we have a 20-loop coil i.e. $N_{1}=20$ and the second is a 40-loop coil i.e. $N_{2} =40$.

So, the ratio of the number of paperclips picked up by the two coils

            = the ratio of the strength of the two coils

            $= B_{1} / B_{2}$

            $= N_{1} / N_{2}$

            $=20/40$

            $= 1/2$

Hence, the 40-loop coil will pick up double the number of clips as picked up by the 20-loop coil.

To learn more about Solenoid, visit

https://brainly.in/question/2805878

#SPJ3