In a model ac generator, a 505 turn rectangular coil 8.0 cm by 30 cm rotates at 120 rev/min in a uniform magnetic field of 0.59 t.

(a) what is the maximum emf induced in the coil?

(b) what is the instantaneous value of the emf in the coil at t = (π/32) s? assume that the emf is zero at t = 0.

(c) what is the smallest value of t for which the emf will have its maximum value? s

The maximum emf in the coil depends on

Maximum flux linkage in the coil:

.

Frequency of the rotation:

.

Angular velocity of the coil:

.

Maximum emf in the coil:

.

Emf varies over time. The trend of change in emf over time resembles the shape of either a sine wave or a cosine wave since the coil rotates at a constant angular speed. The question states that emf is "zero at t = 0." As a result, a sine wave will be the most appropriate here since .

.

Make sure that your calculator is in the radian mode.

.

Consider the shape of a sine wave. The value of varies between -1 and 1 as the value of changes. The value of at time depends on the value of .

reaches its first maximum for when what's inside the sine function is equal to .

In other words, the first maximum emf occurs when

,

where

,

and

.

.

33: i think it’s b

you cant move and you feel like someones pushing you down onto your bed it can feel like you want to get up but you just can't it can be extremely scary