Connect a battery to a solenoid A cylindrical solenoid 39 cm long with a radius of 7 mm has 300 tightly-wound turns of wire uniformly distributed along its length (see the figure). Around the middle of the solenoid is a two-turn rectangular loop 3 cm by 2 cm made of resistive wire having a resistance of 155 ohms. One microsecond after connecting the loose wire to the battery to form a series circuit with the battery and a 20 2 resistor, what is the magnitude of the current in the rectangular loop and its direction (clockwise or counter-clockwise in the diagram)? (The battery has an emf of 9 v.) A • clockwise O counter-clockwise 202

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A: Length(l)=0.5m Diameterd=20cm  ⇒r=10 cm =0.1m n=1200

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Q: What is the effect on the EMF of increasing the number of turns of wire from N = 1 to N = 400?

A: The answer to the given question is as follows.

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A: Kirchhoff's Voltage Law says that work done around a close loop is zero by the conservative field.

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Q: None

A: thank you

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A: Required : Law related to the statement.

Electromagnets

The word "electromagnet" is composed of two words, ‘electro’ and ‘magnet’. It is a type of magnet in which an electric current helps in the generation of a magnetic field. Electromagnets usually consist of two major parts, wire and a coil around which the wire is wound. This is called a solenoid. When an electric current is allowed to pass through the coiled wire, the electric current produces a magnetic field. This magnetic field is present only when current is passing through the wire.