The magnetic field at the center of the coil comes from the whole ______ of the coil.

• loop
• area

• wire
• circumference

The force acting on an object in curvilinear motion directed towards the axis of rotation or center of curvature.

• Centrifugal force
• Tangential force
• Centripetal force
• Radial force

The field of a straight wire is proportional to the current in the wire and _________ to the radius from the wire.

• directly proportional
• not related to
• inversely proportional
• exponentially proportional

When moving through a magnetic field, a charged particle experiences a __________.

• Gravitational force
• Electric field
• Centripetal acceleration
• Magnetic force

A charge moving ________ to a magnetic field moves in a circular orbit.

• Parallel
• Diagonally
• Vertically
• Perpendicular

A charge moving at an angle to a magnetic field moves in a _____.

• circle
• straight line
• zigzag
• spiral

A coil with many turns.

• soleneid

• solenoid

• solanoid

• sollenoid

These are made into coils that concentrate the magnetic field in their center.

• Magnets
• Coils
• Bundled Wires

• Wires

The repulsion and attraction are caused by the _____ that exists between magnetic poles.

• magnetic field
• gravitational pull
• electric charge
• magnetic force

A Danish physicist and chemist and a professor placed a compass needle near a wire through which he could make electric current flow.

• Hans Christian Andersen
• Niels Bohr
• Hans Christian Oersted
• Soren Kierkegaard