What will happen if the direction of current is changed in the coil of motor?

A simple electric motor can be built using a coil of wire that is free to rotate between two opposite magnetic poles. When an electric current flows through the coil, the coil experiences a force and moves. … When the electric current changes direction, the same end of the electromagnet becomes its south pole.

What happens if the current through the coil is reversed?

When the current is reversed, the direction of the magnetic field through the centre of the coil and around the wires is reversed. The magnetic field is strongest inside the coil. This is because the effects of both sides of the vertical part of the wires add up at the centre.

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Why is it necessary to change the direction of the current in the coil?

Answer: This means when you change the direction of the current, you also change the direction of the magnetic field. Because the magnetic field created by the electric current in the wire is changing directions around the wire, it will repel both poles of the magnet by bending away from the wire.

What will happen if the direction of current in the rectangular coil or armature is reversed?

Reversal of direction of current reverses the direction of forces acting on the coil. The change in direction of force pushes the coil; and it moves another half turn. Thus, the coil completes one rotation around the axle. Continuation of this process keeps the motor in rotation.

What will happen when the direction of current is change in conductor?

If the forefinger points in the direction of the magnetic field and the middle finger in the direction of the current, then, the thumb points in the direction of the force exerted on the conductor.So, if the current is reversed in the conductor placed in a magnetic field the direction of force is also reversed.

What will happen if we will change the direction of current in the solenoid?

The direction of magnetic field is always perpendicular to the direction of current flow and the magnitude of the magnetic field inside a solenoid is directly proportional to the current flowing through the solenoid. Thus,when the current through the solenoid is reversed,the direction of magnetic field is reversed.

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What will happen if he reverses the direction of magnetic field?

The magnetic field generated is always perpendicular to the direction of the current and parallel to the solenoid. Hence if we reverse the current the direction of magnetic field also reverses.

What will be the direction of current in the coil A?

In our circuit magnetic field will increase and direction will be out of plane in +Z direction hence current will induce to counter it and produce magnetic field in opposite direction i.e −Z direction. If magnetic field is in −Zdrection then current will be clockwise.

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 do you determine the direction of induced current in a coil?

Here, the current flowing through the wire produces a magnetic field. Direction of the magnetic field produced is given by the right hand thumb rule according to which, when we point the thumb of our right hand in the direction of current, the curled fingers indicate the direction of the magnetic field.

Which reverses the direction of current in the armature coil?

A commutator reverses the direction of current in the coil of a motor.

What is the direction of rotation of armature coil in electric motor?

1) When electric current is passed into the rectangular coil, this current produces a magnetic field around the coil. … Whereas the force on the side CD of the coil is in the upward direction. ABCD rotate in anti-clockwise direction.

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Which component in DC motor reverses flow of current in a coil?

Answer. Answer: So the commutator reverses the current inevery half turn producing a steady torque and thearmature coil rotates in a single direction.

How will this force change if current in conductor is increased?

A larger current in the conductor will result in a larger force acting on it if the strength of the magnetic field is kept constant, as shown in Figure. The magnitude of the force on a current carrying conductor increases when the strength of the magnetic held is increased.

Will changing the direction of current flow affect the strength of an electromagnet?

Answer: Will not. Explanation: just got the question correct.

How do you reverse the direction of a force?

The direction of the current must be reversed every half turn, otherwise the coil comes to a halt again. This is achieved using a conducting ring split in two, called a split ring or commutator. A coil of wire is used with lots of turns to increase the effect of the magnetic field.

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