IDNLearn.com is the perfect place to get answers, share knowledge, and learn new things. Our community provides accurate and timely answers to help you understand and solve any issue.

Calculate the force on 3.0mm of wire carrying a 4.0A current in a 0.020T field, if the current is perpendicular to the field.

Sagot :

The force \( F \) on a current-carrying wire in a magnetic field is given by the equation:

\[ F = I \cdot L \cdot B \cdot \sin(\theta) \]

where:
- \( I \) is the current in the wire (in amperes, A)
- \( L \) is the length of the wire (in meters, m)
- \( B \) is the magnetic field strength (in teslas, T)
- \( \theta \) is the angle between the current and the magnetic field

In this problem:
- \( I = 4.0 \, \text{A} \)
- \( L = 3.0 \, \text{mm} = 0.003 \, \text{m} \) (since 1 mm = 0.001 m)
- \( B = 0.020 \, \text{T} \)
- \( \theta = 90^\circ \) (since the current is perpendicular to the field, \( \sin(90^\circ) = 1 \))

Substituting these values into the formula:

\[ F = 4.0 \, \text{A} \times 0.003 \, \text{m} \times 0.020 \, \text{T} \times 1 \]

\[ F = 0.00024 \, \text{N} \]




Therefore, the force on the wire is \( 0.00024 \, \text{N} \).