Why AC current is not used in Barlows wheel?

Because the current down the spoke into the mercury interacts with the permanent magnets in such a way to move it in a particular direction. If the current was AC the spoke would just vibrate forward and backwards and not have any net rotation.

What happens if AC current is passed through Barlows wheel?

On passing current through the circuit the wheel will begin to rotate due to the action of the magnet on the current. In this way rotation of the wheel continues. On reversing the direction of the current or that of the magnetic field the wheel rotates in the opposite direction.

What is the working principle of Barlow’s wheel?

Working principle of Barlow’s wheel : Due to the action of magnet on a current carrying conductor a force acts on the conductor. Under the influence of this force a wheel rotates continuously in Barlow’s wheel. In this instrument electrical energy is coverted into mechanical energy.

What things run on AC current?

AC is also the more popular current when it comes to powering electric motors, a device that converts electric energy into mechanical energy. Some household appliances that we use that rely on this are, but aren’t limited to: refrigerators, dishwashers, garbage disposals, and toasters.

What will be the change in the motion of a Barlows wheel if the direction of the current is reversed?

Answer: The Lorentz force of the magnetic field on the moving charges in the wheel causes the wheel to rotate. Hence the direction of the rotation will not be changed by reversing that of the current; since the polarity of the electromagnet will also be reversed.”

How the direction of rotation of Barlow’s wheel can be changed?

The direction of Barlow’s wheel can be changed by (i) reversing the direction of current, (ii) reversing the direction of magnetic field.

What change in the rotation of Barlow’s wheel will be observed if strength of current be increased?

(i) The speed of rotation of the wheel increases. (ii) The direction of rotation of the wheel is reversed.

Who invented magnetic wheel?

English mathematician Peter Barlow devised an instrument in 1822 that built on advances from earlier in the century (including the invention the battery) to create a very early kind of electric motor.