Question

A horizontal desk surface measures 1.7 m by 1.0 m. If the Earth's magnetic field has magnitude 0.42 mT and is directed 68° below the horizontal, what is the magnetic flux through the desk surface?

Answer 1

The magnetic flux through the desk surface is
`6.6*10^(-4)\ T-m^2`.

Step-by-step explanation:

Given that,

Magnetic field B = 0.42 T

Angle =68°

We need to calculate the magnetic flux

`\phi=BA\costheta`

Where, B = magnetic field

A = area

Put the value into the formula

`\phi=0.42*10^(-3)*1.7*1.0\cos22^(\circ)`

`\phi=0.42*10^(-3)*1.7*1.0*0.927`

`\phi=6.6*10^(-4)\ T-m^2`

Hence, The magnetic flux through the desk surface is
`6.6*10^(-4)\ T-m^2`.