# What is magnetic field at point O?

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## What is the magnetic field at the the point o?

Zero, because the upper and lower current carrying conductor are identical and so the magnetic fields caused by them at the centre O will be equal and opposite. The horizontal wires will not have any impact on magnetic field at point O.

## What is the value of magnetic field at point O?

Therefore, the magnetic field at the point ‘O’ is 4rμ0I+4πrμ0I.

## What is the magnetic field at point O due to current carrying wires as shown in Figure?

The magnetic field due to straight wires AB and CD is zero since either θ=0o or 180o and that due to a semi-circular arc are equal and opposite; hence net field at O is zero.

## Why is the magnetic field zero?

If the magnitude and direction of the velocity of the particle are constant, then the particle has zero acceleration. From Newton’s second law, we know that the net force on the particle is zero. But there is no magnetic field and, hence, no magnetic force. Therefore, the net force is the electric force.

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## How do you find the magnetic field at a point?

The Biot-Savart Law can be used to determine the magnetic field strength from a current segment. For the simple case of an infinite straight current-carrying wire it is reduced to the form B=μ0I2πr B = μ 0 I 2 π r .

25 to 65 μT

## What is the magnetic field at a point 80 mm from a wire carrying current of 6 A?

Explaination – Hence, the magnetic field at a point is 15×0^-6 T.

## What can be the cause of helical motion of a charged particle?

When a charged particle enters in a magnetic field at an angle other than 90o then a component of velocity takes it under linear motion and other component , under circular motion ,and the combined effect is a helical motion .

## Where is the magnetic field 0?

Looking at the middle portion of our diagram, we see that point meets this condition: the distance from to wire is three times the distance from to wire . This means it’s at point that the magnitude of sub is equal to the magnitude of sub . In other words, the magnetic field is zero.

## Can a magnetic field be zero?

It’s not really true that magnetic field lines cannot cross, but where they do, the magnetic field strength has to be zero. Here’s why: A magnetic field line is that path in space that points in the direction of the magnetic field at every point along it. … Magnetic field lines tend to follow closed loops, though.

## Why is electric field perpendicular to magnetic field?

Also according to Faraday’s law of electromagnetic induction, changing magnetic field will create an electric field perpendicular to it’s direction. That is why in an electromagnetic wave, electric and magnetic fields promote each other in directions perpendicular to themselves. So they are perpendicular.

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