Answer: I = 0.00383A (approx.)
Explanation:
Using the formula:
B = uni
Where B= magnetic field; 0.160mT
= 0.160 × 10^-2 m/T
n = N/L ; N= 4200 turns,
L =1.25mm = 1.25 × 10^-3m
u = 4π × 10 ^ -7.
Now since magnetic field inside a solenoid is independent of dimension B = uNI/L
I = BL/uN
= 0.00162 × 0.00125 /(4200 × 4π ×10 ^ -7)
I = 0.00384A
Explanation:
Statement 1 :
Current is the total amount of charge that passes through a conductor's full cross section at any point per unit of time. Current flowing is given by :
This statement is true.
Statement 2 :
When an electric field is applied to a conductor, the free electrons move only in the direction opposite the applied electric field. It is false because due to electric field the force is applied in the direction of electric field.
Statement 3 :
By convention, the direction of a current is taken to be the direction of flow for negative charges. It is false because the direction of electric current is opposite direction to the flow of negative charges.
Statement 4 :
In a circuit, current is delivered by the positive terminal of a battery, and it is used up by the time it returns to the negative terminal of the battery. It is false because current is delivered by the positive terminal of a battery, and it is used up by the time it returns to the positive terminal of the battery itself.
Statement 5 :
In order to maintain a steady flow of current in a conductor, a steady force must be maintained on the mobile charges. It is true.
Hence, statements 1 and 5 are correct.
1. Has to be a very large bathtub or very, very small supertanker
2. The car hit harder because the bug is not going anywhere near the same speed as the car, therefore it is not exerting the same force.
3. It's so fast it's hard to put a number on it and and it depends on the think Es of wire, distance from wall, and which type of T.V. (because if it requires less electricity then the electrons will travel slower)
4. The ball being thrown, because when and object is thrown and then falls, it always falls at a greater speed then those just being dropped.
Answer:
Oxygen starts with six valance electrons and ends with six valance electrons but after bonding has parts of the densities of 8 electrons
Explanation:
Chemical bonding does not increase the valance electrons. Oxygen has 6 valence electrons. Bonding is sharing of valance electrons
The electron density of two of the valance electrons of Oxygen are shared with the Hydrogen atoms. The Hydrogen atoms is turn share part of the electron density of their single electron with Oxygen.
This means that there are parts of 8 electron densities around the Oxygen. This does not increase the number of valance electrons of Oxygen. (Note the sharing is very unfair, Oxygen gets more than its
share of the electron densities of the two electrons used for the chemical bond.
Explanation:
a) many people think that no energy or matter exists outside the universe.
An isolated system is defined as a system that does not interact with its surroundings. This is the reason that its total energy and mass remains constant. Moreover, t<span>otal</span><span> momentum in a system is conserved for collisions occurring in </span><span>isolated systems.</span>
