What describes the length of a vector?
Which describes the length vector? It is in the direction of the current.
What is the length of unit basis?
A unit vector is a vector with length/magnitude 1. A basis is a set of vectors that span the vector space, and the set of vectors are linearly independent. A basis vector is thus a vector in a basis, and it doesn’t need to have length 1.
Does Vector have direction?
Vector, in physics, a quantity that has both magnitude and direction. It is typically represented by an arrow whose direction is the same as that of the quantity and whose length is proportional to the quantity’s magnitude. Although a vector has magnitude and direction, it does not have position.
Does an electric field exert a force on a straight current carrying wire?
Does an electric field exert a force on a striaght current carrying wire? The force exerted on a moving charge object is zero. neither electric or magnetic. The force exerted on a charged object is proportional to its speed.
How do currents make magnetic fields?
A current traveling through a loop of wire creates a magnetic field along the axis of the loop. The direction of the field inside the loop can be found by curling the fingers of the right hand in the direction of the current through the loop; the thumb then points in the direction of the magnetic field.
What materials will allow electricity to flow through them?
Materials that allow electricity to pass through them are called conductors. Copper wire is a good conductor. Materials that do not allow electricity to pass through them are called insulators. Plastic is a good insulator.
Why is force proportional to current?
Current is directly proportional to magnetic force for a straight current carrying conductor in a uniform magnetic field. So the force is directly proportional to the size of the current. If the current is is reduced to a third of the initial value the force will also reduce to a third of its initial value.
What happens to force when current is reversed?
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 effect how much force is acting on the wire?
If the current-carrying wire is placed in a magnetic field (whose lines of force are at right angles to the wire) then it will experience a force at right angles to both the current direction and the magnetic field lines. The force increases if the strength of the magnetic field and/or current increases.
What is a galvanometer called when calibrated to read current?
A galvanometer is called a ammeter when it is calibrated to read current and a voltmeter when it is calibrated to read voltage.
What is Fleming’s left hand rule GCSE?
The force on a given length of wire in a magnetic field increases when: the current in the wire increases. the strength of the magnetic field increases.