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What happens when you reverse the current in an electromagnet?

The two poles of the permanent magnet remain the same, but the poles of the electromagnet reverse when the direction of electric current reverses. This pulls the electromagnet towards the permanent magnet. When the electric current changes direction, the same end of the electromagnet becomes its south pole.

How do you tell if induced current is clockwise or counterclockwise?

Now: point your left-hand thumb in the direction of the change of magnetic field: then your fingers curl in the orientation of the induced electric field. It is “clockwise” when you look at your hand thumb-on, or when you look at the change pointing towards you.

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 will be the direction of current in the coil A as the switch S is closed?

According to Lenz’s law, the induced current in the loop will be such that it opposes the increase in the magnetic field due to current flow in the circuit. Therefore, the direction of the induced current when the switch is closed is anti-clockwise.

When current increases in a coil the induced current will be?

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 …

When North Pole approach a coil the front side of the coil will show an?

Answer. Answer: When North pole approaches a coil, the front side of the coil will show an anticlockwise current.

When a magnet is moved with its north polarity towards a coil placed in a closed circuit then the nearer face of the coil?

As the north polarity of the magnet is brought near the coil as a result the induced current will be in such a direction that the face of the coil will have north polarity. The current will flow in the anti-clockwise direction.

When a magnet is moved with its north polarity towards a coil placed in a closed circuit?

6.1, we see that the North-pole of a bar magnet is being pushed towards the closed coil. As the North-pole of the bar magnet moves towards the coil, the magnetic flux through the coil increases. Hence current is induced in the coil in such a direction that it opposes the increase in flux.

When a coil and magnet both are stationary?

When the coil and the magnet are both stationary, there is no deflection in the galvanometer. It is, thus, clear from this activity that motion of a magnet with respect to the coil produces an induced potential difference, which sets up an induced electric current in the circuit.

How does the voltage change as you move the south side in rather than the North?

4)How does the Voltage change as you move the south side in rather than the North? The voltage reads positive then returns to zero as you move the south side.

When a magnet is moved with its north polarity?

When a magnet is moved with its north polarity towards a coil placed in a closed circuit, then the neares face of the coil shows north polarity.

When the resistance is increased What happens to current?

The current is directly proportional to the voltage and inversely proportional to the resistance. This means that increasing the voltage will cause the current to increase, while increasing the resistance will cause the current to decrease.