- #1

predentalgirl1

- 67

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**[SOLVED] Induced emf: Faraday's Law and Lenz's Law Question**

**The plane of a conductive loop with an area of 0.020 m^2 is perpendicular to a uniform magnetic field of 0.30 T. If the field drops to zero in 0.0045 s, what is the magnitude of the average emf induced in the loop?**

**Given that,**

Area (a) = 0.020m2

Magnetic filed (B) = 0.30 T.

When the field drops to zero,

Time taken = 0.0045 s

I have,

Induced emf = Change in flux

Time taken

= B x a cos 90

Time taken

= 0.30 x 0.020 x 1

0.0045

= 1.33 V

Area (a) = 0.020m2

Magnetic filed (B) = 0.30 T.

When the field drops to zero,

Time taken = 0.0045 s

I have,

Induced emf = Change in flux

Time taken

= B x a cos 90

Time taken

= 0.30 x 0.020 x 1

0.0045

= 1.33 V

Is my work/answer correct?