
⚙️ Electric Motor:
An electric motor is a device that converts electrical energy into mechanical energy.
Working Principle:
It works on the principle that a current-carrying conductor placed in a magnetic field experiences a force (Fleming’s Left-Hand Rule).
How it Works:
A coil (armature) is placed between the poles of a magnet.
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- When electric current flows through the coil, it experiences a force on both sides.
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- These forces act in opposite directions, causing the coil to rotate.
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- A commutator is used to reverse the direction of current after every half turn to keep the rotation continuous.
Uses:
Electric fans, mixers, washing machines, etc.

⚡ Electric Generator:
An electric generator is a device that converts mechanical energy into electrical energy.
Working Principle:
It works on the principle of electromagnetic induction. When a coil rotates in a magnetic field, a current is induced in the coil.
How it Works:
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- A coil is rotated between the poles of a magnet.
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- As it rotates, it cuts the magnetic field lines and induces a current.
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- Slip rings are used in AC generators to allow current to flow out without changing direction inside the coil.
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- The direction of the current keeps changing, producing alternating current (AC).
Uses:
Power generation in power stations, wind turbines, etc.