When two or more resistors are connected in parallel to a battery A) the voltage across each resistor is the same. B) the total
1 answer:
Answer:
Here, for parallel resisitors
Option D) all of the other choices are are true
is correct.
Explanation:
In parallel connection:
1) Voltage across each element connected in parallel remain same.
2) Kirchhoff's Current Law (KCL), sum of the current entering and leaving the junction will be zero
3) The equivalent resistance of the elements connected in parallel is always less than the individual resistance of any resistor in the circuit.
The equivalent resistance in a parallel circuit is given by:
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Given,
Distance from the surface to the center of the earth, d=4000 miles
Distance from the center to you at a height of 8000 miles, a= 8000+4000=12000 miles
The gravitational force acting on a person at the surface is equal to his weight.
From Newton's Universal Law of Gravitation, the gravitational force is
Where G is the gravitational constant, M is the mass of the earth, m is the mass of the object/person, r is the distance between the center of the earth and the object/person
At the surface, this force is equal to the weight of the person, W=mg
i.e.
On substituting the of d,
At a height of 8000 miles from the surface, the gravitational force is equal to,
On dividing the above two equations,
Therefore,
Therefore at a height of 8000 miles above the surface of the earth, the force of gravity becomes 1/9 time your weight.