How are the forces between charges similar to the forces between magnetic poles?
2 answers:
Answer:
As we know that the force between two charges and force between two poles are similar in may ways. These are given as following
1). Similar poles and similar charge always repel each other while opposite charge and opposite poles will attract each other
2). force between two charges is given by
force between two poles of magnet is given as
3). Both the force equation follows inverse square law which means force inversely depends on the square of the distance between two charges and two poles
4). Both forces depends on the product of two charges or product of two pole strength of magnet
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Answer:
arctg (- 6.5 / 6.0) = -47.2906° ~ 47
Ans. 360° - 47°= 133°
Answer:
Therefore the ratio of diameter of the copper to that of the tungsten is
Explanation:
Resistance: Resistance is defined to the ratio of voltage to the electricity.
The resistance of a wire is
- directly proportional to its length i.e
- inversely proportional to its cross section area i.e
Therefore
ρ is the resistivity.
The unit of resistance is ohm (Ω).
The resistivity of copper(ρ₁) is 1.68×10⁻⁸ ohm-m
The resistivity of tungsten(ρ₂) is 5.6×10⁻⁸ ohm-m
For copper:
......(1)
Again for tungsten:
........(2)
Given that and
Dividing the equation (1) and (2)
[since
and
]
Therefore the ratio of diameter of the copper to that of the tungsten is