Answer:
D- when the current is at a 90- degree angle to the field
Explanation:
plato
Ninety degree angle between directions.
Lorentz force, the force exerted on a charged particle q moving with velocity v through an electric field E and magnetic field B.
The entire electromagnetic force F on the charged particle is called the Lorentz force and is given by
F = qE + qv × B or
F = BILsinθ
Where,
B= Magnetic Field in Tesla , I = Current in a wire in Ampere
L= Length of the wire in meters
θ = angle between the Vector B and vector I in degrees.
Since,
F = BILsin90° ,Where force will be maximum.
F = BILsin0° Where force will be minimum
The maximum force on a current-carrying conductor occurs when the current direction and the magnetic field's direction are perpendicular to one another.
Therefore,
Ninety degree angle between directions.
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