A pair of opposite electric charges of equal magnitude is called a(n)
2 answers:
Answer:
A) dipole.
Explanation:
As we know that when two equal and opposite charges are placed at some distance from each other then this combination of two equal and opposite charges are known as electric dipole.
Here electric dipole has dipole moment which is a vector quantity which is measured as the product of charge and distance between the two charges
it is given as
here the direction of dipole moment is from negative charge to positive charge.
so correct answer is given as
A) dipole.
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The directions of magnetic force and magnetic field lines are shown in the figure.
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Thumb - Direction of magnetic field lines
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Such that forefinger, centre finger and thumb must be at 90 degrees to each other.
The direction to find out the magnetic field lines is given by right hand curl rule. If the thumb shows the direction of current, then the curling fingers show the direction of magnetic field lines.
The direction of force can be given by right hand thumb rule, where
Thumb - Direction of magnetic field lines
Forefinger - Magnetic force
Centre finger - Current
Such that forefinger, centre finger and thumb must be at 90 degrees to each other.