A15-turn circular wire loop with a radius of 3.0 cm is initially in a uniform magnetic field with a strength of 0.5 t. the field decreases to zero over a time of 0.10 sec. what is the induced emf? a. 0.21 vb. 7.1 vc. 0.01 vd. 0.2.25 v

To solve this problem it is necessary to apply the definition given in Faraday's law in a solenoid for which it is noted that

Where,

N = Number of loops

A = Cross sectional Area

B = Magnetic Field

Therefore the correct answer is A.

fgravity=10x10=100n case 1

fgravity=30x20=600n case 2

6 times more

f=ma newton's second law 7x8=56n