pts) What is the magnitude of the magnetic field at the center of a long tightly

Question

pts) What is the magnitude of the magnetic field at the center of a long tightly wound 35-cm ng solenoid that has 2500 turns of wire and carries a current of 400 mA? agnetic field due to solenoid (3 pts): Two long wires in space are parallel to each other and their cross section is shown. The same current is then passed through both wires. When the force per unit length is measured, its value is 1.6x10 N/m. What current is being passed through the wires? 0.3 m 1- Is the force Attractive or repulsive? (circle one) 0.4 m 8. (4 pts) A transformer has 500 turns in the primary coil and 1000 turns in the secondary coil. Assuming 100% efficiency in the transformer, what are the current and voltage in the secondary coil if the current in the primary coil is 4 amps and the primary voltage is 1000-V Current in secondary Voltage in secondary plane of the loop is oriented perpendicular to a magnetic field that increases uniformly in the magnitude of the induced current? pts) A planar loop consists of 10 turns of wire. The loop encloses an area of 0.03 m and the from 0 mT to 25 mTin a time of 5.0 ms. If the resistance in the loop is 8 ?. what is Induced current

Explanation / Answer

6.

Magnetic field at the center of solenoid

B= (uo)*Ni/L

= 4*pi* 10^-7*2500*0.4/0.35

= 3.59*10^-3 T

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7.

F/L= (uo/4*pi)*2(i1)(i2)/ r

1.6*10^-6 = 10^-7*2*i^2/0.5

i= 1.414 A

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Do comment in case any doubt..goodluck

Plz post other problems seperately

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