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What is produced when there is a current in the primary coil of a transformer?
solenoid.
repeatedly reverses the flow of current through the armature.
mechanical energy into electrical energy.
galvanometer.
electrical energy is transformed into mechanical energy.
magnetic field
an electric motor
Its speed can be slowed.
A coil of wire with a current is called a(n)
solenoid.
repeatedly reverses the flow of current through the armature.
mechanical energy into electrical energy.
galvanometer.
electrical energy is transformed into mechanical energy.
magnetic field
an electric motor
Its speed can be slowed.
What device transforms electrical energy into mechanical energy?
solenoid.
repeatedly reverses the flow of current through the armature.
mechanical energy into electrical energy.
galvanometer.
electrical energy is transformed into mechanical energy.
magnetic field
an electric motor
Its speed can be slowed.
In an electric motor, a commutator
solenoid.
repeatedly reverses the flow of current through the armature.
mechanical energy into electrical energy.
galvanometer.
electrical energy is transformed into mechanical energy.
magnetic field
an electric motor
Its speed can be slowed.
When a wire with a current is placed in a magnetic field,
solenoid.
repeatedly reverses the flow of current through the armature.
mechanical energy into electrical energy.
galvanometer.
electrical energy is transformed into mechanical energy.
magnetic field
an electric motor
Its speed can be slowed.
A generator transforms
solenoid.
repeatedly reverses the flow of current through the armature.
mechanical energy into electrical energy.
galvanometer.
electrical energy is transformed into mechanical energy.
magnetic field
an electric motor
Its speed can be slowed.
Which is NOT a characteristic of a magnetic field produced by a current?
solenoid.
repeatedly reverses the flow of current through the armature.
mechanical energy into electrical energy.
galvanometer.
electrical energy is transformed into mechanical energy.
magnetic field
an electric motor
Its speed can be slowed.
A device used to measure small currents is a(n)
solenoid.
repeatedly reverses the flow of current through the armature.
mechanical energy into electrical energy.
galvanometer.
electrical energy is transformed into mechanical energy.
magnetic field
an electric motor
Its speed can be slowed.
Check it!