What happens when electric current is passed through a coil of wire?

Either an electric current is passed through the wire of the coil to generate a magnetic field, or conversely, an external time-varying magnetic field through the interior of the coil generates an EMF (voltage) in the conductor. The more turns of wire, the stronger the field produced.

How does the induced current in a coil II change when the number of turns in the coil I is decreased?

The magnitude of induced current will increase when a powerful magnet is used and when the relative motion of the magnet with respect to coil increases and decreases when the number of turns in the copper coil is decreased.

What occurs in the secondary circuit when the current in the primary is changed?

A changing current in the primary coil induces an e.m.f in the secondary. Since the e.m.f generated depends on the number of turns, the voltage induced in the secondary can be changed – stepped up or down – by altering the turn’s ratio.

When electric current starts flowing through the coil are produced at each point on the coil?

▶When electric current starts flowing through the coil ‘Magnetic Fields’ are produced at each point on the coil. ❖ Our planet’s magnetic field is believed to be generated deep down in the Earth’s core. ❖ The North pole of a compass needle is a magnetic North pole.

How does the number of turns in a coiled wire affect the induced emf in the set up?

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 …

What is the direction of the current induced in coil 2?

Since the resultant magnetic flux in the coil 2 due to coil 1 is into the plane of the coil, as current in the coil 1 increases, the induced current in the coil 2 will be to oppose the flux due to coil 1. Hence the direction of the induced current in the coil 2 will be counter clock wise.

What is the direction of the current induced in the coil?

The current induced in the coil creates another field, in the opposite direction of the bar magnet’s to oppose the increase. This is one aspect of Lenz’s law—induction opposes any change in flux.

How the current through primary will flow when the secondary is connected to the load?

When you connect the load at secondary, current flow starts and power increases with increasing load but the power at the primary and secondary remains same. so primary power also increases. i.e. it is the matter of current or power handling capability at constant voltage that sets the limits.

When secondary current increases primary current also increases in transformer Why?

1 primary current I1 increases because it depends upon the difference between terminal voltage and E1. Hence loading a transformer on secondary increases the primary current without any external command. Originally Answered: The current transformer steps down voltage on the secondary side then the voltage increases.