answersLogoWhite

0


Best Answer

A dynamo.

It is hard to produce pure direct current using the induction of a magnet on a coil.

In a rotating coil the north and south poles of a magnet will normally cause the current to flow the opposite way, every half turn.

In a dynamo, the spinning electromagnet in the centre of the field coils, has many separate windings. The current is switched to each coil make sure the magnetism only has one polarity, at each fraction of a turn. This switch is called a commutator.

User Avatar

Wiki User

11y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is a device that produces direct current by means of magnetism?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What does the term rectifier mean?

An electrical device that converts alternating current to direct current is known as a rectifier. An inverter is a device that converts direct current to alternating current.


What piece of equipment is used to produce electricity?

Some possible answers are: a battery (which produces direct current) or a generator of electricity generator, such as a dynamo (which produces direct current) or an alternator (which produces alternating current).


What kind current is produced by a dry cell?

A dry cell battery does not use current it produces a current when connected to an electrical load. The type of current that the dry cell produces is DC (direct current).


Which device is used to convert direct current into alternating current?

An inverter


What is an ac and DC generator?

An a.c. generator produces alternating current, whereas a d.c. generator produces direct current.


Which is the device that converts AC to DC?

A Rectifier converts Alternating current into Direct current


What device has the ability to change direct current to alternating current?

It's called an inverter.


Name device which permits direct current and opposes the flow of alternating current?

A diode does that.


Which device you use to convert the direct current into AC?

Invertor


Does a dry-cell battery produce the same current that a generator produces?

A dry cell produces direct current, which means that the current flows from one terminal of the dry cell to the other in one direction only. The word generator nowadays often means a device that produces alternating current, which is to say current that reverses its direction, usually at a fixed rate called the frequency. For instance, the current available in North American homes is alternating current at 60 cycles per second; it reverses direction 120 times per second. A machine that produces current that resembles what is available from a dry cell is often called a dynamo. These devices are similar to generators but with switches in them to change the alternating current to direct current, in effect. The current they produce is still not quite like that from a dry cell inasmuch as it's not perfectly 'smooth' continuous direct current. There's a ripple of slightly higher and lower current superimposed on the direct current. Please see the link, especially the graph associated with the Gramme dynamo.


Is it true that a battery produces alternating current?

No. A battery produces DC, or Direct Current.


Does a dry cell battery produce alternating current or direct current?

directA dry cell battery produces DC.