Concept

# Problem: The magnetic flux through a coil of wire containing two loops changes at a constant rate from -83 Wb to +32 Wb in 0.30 s.What is the magnitude of the emf induced in the coil?Express your answer to two significant figures and include the appropriate units.

###### FREE Expert Solution

$\overline{){\mathbf{\epsilon }}{\mathbf{=}}{\mathbf{-}}{\mathbf{N}}\frac{\mathbf{d}\mathbf{\varphi }}{\mathbf{d}\mathbf{t}}}$, where N is the number of loops, dϕ is the change in magnetic flux and dt is the change in time.

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###### Problem Details

The magnetic flux through a coil of wire containing two loops changes at a constant rate from -83 Wb to +32 Wb in 0.30 s.

What is the magnitude of the emf induced in the coil?
Express your answer to two significant figures and include the appropriate units.