What is coil explain?

coil, in an electric circuit, one or more turns, usually roughly circular or cylindrical, of current-carrying wire designed to produce a magnetic field or to provide electrical resistance or inductance; in the latter case, a coil is also called a choke coil (see also inductance).

What is meant by coil voltage?

The Rated Coil Voltage of a relay is the voltage that the relay is supposed to receive in order to be energized. This is the voltage that the relay ideally should receive when you energize it.

How do you calculate coil voltage?

All you have to do is start by dividing the primary volts by the number of primary turns: 120 ÷ 75 = 1.6. Since you know the number of turns in the secondary, you would now multiply the 150 secondary turns by the primary current of 1.6:150 × 1.6 = 240. Now you have determined that the secondary voltage is 240 V.

Why a voltage is produced as the coil turns?

A voltage is produced when a magnet moves into a coil of wire. This process is called electromagnetic induction . The direction of the induced voltage is reversed when the magnet is moved out of the coil again. It can also be reversed if the other pole of the magnet is moved into the coil.

What can make an electromagnet stronger?

You can make an electromagnet stronger by doing these things:

• wrapping the coil around a piece of iron (such as an iron nail)
• adding more turns to the coil.
• increasing the current flowing through the coil.

Why do we use coil?

A current through any conductor creates a circular magnetic field around the conductor due to Ampere’s law. The advantage of using the coil shape is that it increases the strength of the magnetic field produced by a given current.

What is the difference between current coil and voltage coil?

The current coil is connected in series with the circuit, while the voltage coil is connected in parallel. In an analog wattmeter, the voltage coil has a needle attached to it that moves over a scale as the voltage coil moves to indicate how much power, in watts, is passing through the circuit.

What is coil voltage for relay?

The coil of a relay passes a relatively large current, typically 30mA for a 12V relay, but it can be as much as 100mA for relays designed to operate from lower voltages….Coil resistance.

What is the difference between voltage coil and current coil?

How do you calculate current in a coil?

To determine the current flow in the wire, first find the inductive reactance of the coil. The inductive reactance equals 6.28 times 60 hertz times 0.3 henries which equals 113.1 ohms. Now use Ohm’s Law and divide 120 volts by 113.1 ohms which equals 1.06 amps.

What happens if you move a magnet out of a coil of wire?

A magnet and a coil of wire can be used to produce an electric current. The direction of the induced voltage is reversed when the magnet is moved out of the coil again. It can also be reversed if the other pole of the magnet is moved into the coil.