Table of Contents
In which loop is the induced current greatest?
The induced current is greatest when: the plane of the loop is parallel to the magnetic field.
When the magnitude of the induced current is maximum?
After a 90o rotation , the sides of the coil parallel to the magnetic fields. There is no cutting of the magnetic field lines. The induced current is zero. After a 180o rotation, the coil is horizontal again and the maximum induced current is produced.
How can induced current be increased?
The magnitude of the induced current can be increased by: Taking the conductor in the form of a coil of many turns of insulated wire. Increasing the strength of the magnetic field used. Increasing the rate of change of magnetic flux associated with the coil.
What is electromagnetic induction when induced current is found to be the highest?
So the induced current is highest when the direction of motion of the coil is the right angle to the magnetic field.
What is the direction of the induced current?
The induced current will be counterclockwise (ccw). As the bar moves upward through the constant magnetic field region, the area of the loop decreases, so the flux through the loop decreases. By Lenz’s law, any induced current will tend to oppose the decrease.
What induced voltage?
We know that a voltage is induced if either a static conductor is situated within in a changing magnetic field or a conductor moves within a static magnetic field. Faraday’s Law describes this phenomenon. Furthermore, a voltage applied to a resistive or reactive load will cause current to flow per Ohm’s Law.
How do you calculate maximum induced emf?
Calculating the induced EMF Magnetic flux = Magnetic field strength x Area = BA. Therefore…Induced EMF = (change in Magnetic Flux Density x Area)/change in Time. Therefore, Induced EMF = (Bπr2n)/t.
What is induced electric current?
Current produce in a conductor due to change in magnetic flux through the region is called induced current. Magnetic flux is product of magnetic field and area of Cross scection. Like current produce in generator is induced current.
What is the magnitude of induced current?
The answer is 0 because for any current to be induced, it needs to have a change in flux. The wire carries a steady current so there will be no change in flux.
Under what conditions is the induced current?
A current can be induced in a conducting loop if it is exposed to a changing magnetic field. A current can be induced in a conducting loop if it is exposed to a changing magnetic field.
How is an emf induced?
An emf is induced in the coil when a bar magnet is pushed in and out of it. Movement of a magnet relative to a coil produces emfs as shown. The same emfs are produced if the coil is moved relative to the magnet. The greater the speed, the greater the magnitude of the emf, and the emf is zero when there is no motion.