A flashlight is charged by shaking an internal magnet back and forth through coiled wires.
Explanation:
Charging a flashlight by shaking an internal magnet back and forth through coiled wires can cause electromagnetic induction to occur. The wire is in the vicinity of changing magnetic fields.
- Electromagnetic induction or induction is the production of electromotive force(EMF) by varying the magnetic field in an electrical conductor.
- The wire serves as the electrical conductor.
- As the magnetic flux on it changes, the electromotive force is then produced.
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Say what? I don’t understand
It's commonly referred to as an electric current.
Answer:
nucleus is the center of atom
Answer:
Explanation:
Since the wires attract each other , the direction of current will be same in both the wires .
Let I be current in wire which is along x - axis
force of attraction per unit length between the two current carrying wire is given by
x
where I₁ and I₂ are currents in the wires and d is distance between the two
Putting the given values
285 x 10⁻⁶ = 10⁻⁷ x
I₂ = 16.76 A
Current in the wire along x axis is 16.76 A
To find point where magnetic field is zero due the these wires
The point will lie between the two wires as current is in the same direction.
Let at y = y , the neutral point lies
k 2 x = k 2 x
25.5y = 16.76 x .3 - 16.76y
42.26 y = 5.028
y = .119
= .12 m