Answer:
The magnetic field is lowest for largest distance and highest when distance is least.
Explanation:
The magnitude of magnetic field strength at a distance 'r' from a long straight wire carrying current 'I' is given as:
Now, as per question, the distance 'r' is varied while keeping the current constant in the wire.
As seen from the above formula, the magnitude of magnetic field strength for a constant current varies inversely with the distance 'r'. This means that, as the value of 'r' increases, the magnitude of magnetic field strength decreases and vice-versa.
Therefore, the magnitude of magnetic field strength is maximum when the distance 'r' is least and the magnetic field is minimum for the largest distance.
Example:
If 
are the magnitudes of magnetic field strengths for distances 
respectively such that 
. Now, as per the explanation above, the order of magnitudes of magnetic field strength is:
Answer:
6 centimeter = 60 millimeter
Explanation:
1 meter = 100 centimeter
1 centimeter = 0.01 meter
Thus, 6 × 1 centimeter = 6 × 0.01 meter
6 centimeter = 0.06 meter
Hence, first option is wrong.
1 centimeter = 10 millimeter
6 × 1 centimeter = 6 × 10 millimeter
6 centimeter = 60 millimeter
Thus, third option is correct.
The green is ground. Ideally, no current travels in this one. The red and black are the power and neutral wires but which colors they are depends on a convention. In the US, you will actually have a black (power) and a white (neutral) Here it's red and black and usually in a red/black system the red is the power. Either way there is a potential of 120V rms between them.
Well, an equilibrium means that no force are changing an object's inertia (current state of motion).
T2=r In the form of Kepler's law that can use to relate the period T and radius of the planet in our solar systems
<u>Explanation:</u>
<u>Kepler's third law:</u>
- Kepler's third law states that For all planets, the square of the orbital
period (T) of a planet is proportional to the cube of the average orbital radius (R).
- In simple words T (square) is proportional to the R(cube) T²2 ∝1 R³3
- T2 / R3 = constant = 4π ² /GM
where G = 6.67 x 10-11 N-m2 /kg2
M = mass of the foci body
