An electric current flows through a solenoid that increases from 0.2 A to 1.7 A in a time interval of 0.3 s. Assuming that the inductance of the solenoid is equal to L = 4 mH and that the electric current increases linearly, what is the induced emf between the ends of the solenoid? Possible answers: • a) 10mV • b) 15mV • c) 20mV • d) 25mV • e) 30mV( NO GPT PLEASE,NEED NEAT HANDWRITTEN SOLUTION ONLY OTHERWISE DOWNVOTE ).

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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.