A wire 28 cm long is parallel to a 0.36 T uniform magnetic field. The current through the wire is 4.5 A. What force acts on the wire?

What equation do you use?

To find the force acting on a wire in a magnetic field, we can use the equation:

F = BIL

Where:
F is the force on the wire (in Newtons),
B is the magnetic field strength (in Tesla),
I is the current flowing through the wire (in Amperes), and
L is the length of the wire (in meters).

In this case, we are given:
B = 0.36 T (Tesla),
I = 4.5 A (Amperes),
L = 28 cm = 0.28 m (meters).

Now we can substitute these values into the equation to find the force:

F = (0.36 T) x (4.5 A) x (0.28 m)

Simplifying the equation, we can multiply the values:

F = 0.4536 N

So, the force acting on the wire is 0.4536 Newtons.