select the correct answer. what happens to the induced electric current if the number of loops is increased…

select the correct answer. what happens to the induced electric current if the number of loops is increased from one to three? a. it stays the same. b. it doubles in magnitude. c. it triples in magnitude. d. it decreases by a factor of three. e. it decreases by a factor of two.

select the correct answer. what happens to the induced electric current if the number of loops is increased from one to three? a. it stays the same. b. it doubles in magnitude. c. it triples in magnitude. d. it decreases by a factor of three. e. it decreases by a factor of two.

Answer

Brief Explanation:

According to Faraday's law of electromagnetic - induction, the induced emf $\epsilon=-N\frac{\Delta\Phi}{\Delta t}$, where $N$ is the number of loops and $\Phi$ is the magnetic - flux. Assuming the resistance $R$ of the circuit remains constant, the induced current $I = \frac{\epsilon}{R}=-\frac{N}{R}\frac{\Delta\Phi}{\Delta t}$. When the number of loops $N$ is increased from 1 to 3, with other factors constant, the induced current triples since $I\propto N$.

Answer:

C. It triples in magnitude.