1). To induce the emf, which force was the main cause of the inducement? Gravita

Question

1). To induce the emf, which force was the main cause of the inducement?

Gravitational

Magnetic

Centripetal

Electric

2). Besides Faraday’s Law of Induction, which of the following laws below were the most relevant in the induction lab:

Lenz's Law

Ampere's Law

Gauss' Law

Biot-Savart Law

(3). The current produced is stronger when the magnet is moved quickly rather than gradually. True False

(4). A greater voltage can be induced in coils made from a larger number of turns of wire. True False

(5). When the north end of the magnet enters the coil, a current is induced that travels around the coil in a ........................................... direction; when the magnet is then pulled out of the coil, the direction reverses to ....................................................

counterclockwise, clockwise

clockwise, counterclockwise

clockwise, clockwise

counterclockwise, counterclockwise

Explanation / Answer

1) To induce the emf,Electric force was the main cause of the inducement

2)  Besides Faraday’s Law of Induction, Lenz's Law were the most relevant in the induction lab

3) true because The reason is a moving magnet causes a CHANGING magnetic field, and a changing magnetic field will induce a voltage in a loop of wire (or a coil) that surrounds it

4) true Therefore, the voltage is determined by the ampere turns of the coil. With more turns of wire within the coil, the greater the strength of the voltage

5) counterclockwise, clockwise

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