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Question
A conductor kept in a magnetic field experiences a force when current passes through it. This is the principle operation of:
A conductor kept in a magnetic field experiences a force when current passes through it. This is the principle operation of:
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Solution
The correct options are
A Electric Speaker
B Electric Motor
Electric motors and speakers work on the principle that a current carrying conductor in a magnetic field experiences a force. This force in the case of a motor turns the rotor, while in a speaker moves the diaphragm to produce sound.
A compass does not require current to operate, as the needle itself is a permanent magnet and in a magnetic field, it experiences a force.
A solenoid produces a magnetic field when current is passed through it.
A
Electric Speaker
B
Electric Motor
Electric motors and speakers work on the principle that a current carrying conductor in a magnetic field experiences a force. This force in the case of a motor turns the rotor, while in a speaker moves the diaphragm to produce sound.
A compass does not require current to operate, as the needle itself is a permanent magnet and in a magnetic field, it experiences a force.
A solenoid produces a magnetic field when current is passed through it.
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