What would happen to the coil if the current passing through it was too large?

If the current is too large, the heat loss can damage the circuit, burn the resistors, or even burn the surrounding objects.

What happens when a current flows through a resistance?

An electric current flows when electrons move through a conductor, such as a metal wire. When resistance is increased in a circuit , for example by adding more electrical components , the current decreases as a result.

What happens to a piece of steel when it is placed in a coil that is connected to a source of direct current?

When the electric current moves through a wire, it makes a magnetic field. Putting a piece of iron or steel inside the coil makes the magnet strong enough to attract objects.

How does the number of coils affect the current induced in the coil and why?

Increasing the number of turns of wire in the coil – By increasing the amount of individual conductors cutting through the magnetic field, the amount of induced emf produced will be the sum of all the individual loops of the coil, so if there are 20 turns in the coil there will be 20 times more induced emf than in one …

How a current flow through a coil?

If a coil of wire is placed in a changing magnetic field, a current will be induced in the wire. This current flows because something is producing an electric field that forces the charges around the wire. (It cannot be the magnetic force since the charges are not initially moving).

When current flows through a coil of wire it creates group of answer choices?

Electromagnets. When an electric current flows in a wire, it creates a magnetic field around the wire. This effect can be used to make an electromagnet . A simple electromagnet comprises a length of wire turned into a coil and connected to a battery or power supply.

What will happen to the current through a circuit if the resistance is decreased?

But current is also inversely proportional to the resistance; a halving of the resistance will double the current.

When does a coil experience an induced current when magnetic field varies?

A coil experiences an induced current when the magnetic field passing through it varies. (a) When the magnet moves toward the coil the current is in one direction. (b) No current is induced while the magnet is held still.

What is the direction of induced current when withdrawing a magnet?

Right to left. Flux through the loop decreases as the magnet is withdrawn. There fore to prevent this change(Lenze’s Law) the induced current flows in such direction that a north pole is induced at the left side of the coil and it attracts the south pole of the retreating bar magnet.

What happens when the magnetic flux changes in a loop?

If the magnetic flux through a loop of wire changes for any reason either by changing the area, A, of the loop or the field, B, through the loop Then an EMF (voltage) will be induced in the wire. This voltage will cause a current to flow (the induced current in the loop).

How does the direction of induced EMF affect current?

The direction of the induced EMF will control the direction of the induced current. The direction of the induced EMF follows from Lenz’s Law. Lenz’s Law. The current that is induced in a coil (due to a magnetic flux change through the coil) will always be such that it opposes the change that caused it.