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Electromagnetic induction is used in the building of electrical generators, which create voltage by moving a magnetic
field past coils of wire using mechanical power. However, this is far from the sole practical use of this principle.
Directions: Choose two of the following gadgets and conduct some study on how it works on the internet or at a library.
In your explanation, you will need to relate to Faraday's Law.
• Metal detectors, transformers, tape players, and induction stoves
How much work is needed to move a −9.5 charge from ground to a point whose potential is +75 V.
A large horseshoe magnet produces a magnetic field of strength 2×10−2 T in the region between the poles of the magnet. A wire of 5 cm length is placed in the field at the right angle to the field lines and carries a current of 15 mA. Calculate the force acting on a wire.
Current of 50A flows to east on stationery wire . A second wire is 1cm below it . How much current must be flowing in the second wire so that doesn't fall due to gravity ? What is the direction of the current ? The mass per unit length of the second wire is 5g/m
Light that is nonpolarized has an intensity of 6.0 W/m2. Rays of this
light are incident on two polarizing elements whose transmission
axes are at an angle of 450. What is the intensity of light emerging
from the second film?
Two spherical conducting shells of radii ra and rb are arranged concentrically and are charged to potentials Ua and Ub respectively. If Ra>Rb, find the potential at points between the shells and at points r>rb
An electric wire in the wall of a building carries a current of 25A vertically upward. What is the magnetic field due to this current at point P 10cm due north of the wire
Find the measurement of the angle of refraction using the given illustration.
N
\ |
Air (n=1.00) \ |
\ |
_____________ \ | _____________
Crown |
Glass (n= 1.52) |
|
There is a lead XY of the shape of a long straight line and a doubly-rolled circular lead whose center is O with radius 0.10 m. They are in the same plane and the distance between XY and O is 0.20 m. A current of 15.7 A is flowing in lead XY to the direction shown in the figure below. Set the circle ratio is 3.14. Find the strength of the magnetic field which the straight line current builds at the center O of the circle.
A person plugged in a 1250 W hair dryer and a 2500 W electric heater in the same 120 V outlet
protected by a 7.5 A circuit breaker. Will the breaker trip?
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#340153 on Dec 2023