Physics Questions
Explore questions in the Physics category that you can ask Spark.E!
What must change in order for electromagnetic induction to occur in a wire coil?
What ultimately transfers from one location to another in electromagnetic induction is
What happens when a wire is held between the poles of a magnet?
In order that electromagnetic induction occurs in a circuit there must be a
Click on the button with two coils in it in the lower part of the window. The circuit should now have two sets of coils. Place the bar magnet inside the coil containing two loops.Try to find a location where the stationary magnet induces a current in the coil and causes the light bulb to shine. Which of the following is correct?
What transforms from one coil to another in a transformer is
Now, let's look at a situation with changing flux. Starting from the far left of the screen, move the magnet to the right so it goes through the middle of the two loops coil at a constant speed and out to the right of the coil.Roughly where is the magnet when the light bulb is the brightest? (The brightness of the light bulb correlates with how much the needle of the voltmeter gets deflected away from the middle .)
A generator normally produces ac because the magnetic field experienced by interior coils
Maxwell's counterpart to Faraday's law emphasizes electric and magnetic
How does the brightness of the light bulb change if the magnet is moved through the coil more quickly?
Now let's repeat the previous experiment with the four loop coil. Starting from the far left of the screen, move the magnet to the right so it goes through the middle of the four loops coil at a constant speed and out to the right of the coil.How does the average brightness of the light bulb depend on the number of loops of the pickup coil?
Faraday's law of induction deals with how a magnetic flux induces an emf in a circuit. Recall that magnetic flux depends on magnetic field strength and the effective area the field is passing through. We'll start our investigation by looking at the field strength around a bar magnet.Position the magnet around the coil so that the region labeled A in the figure below is inside the coil. Move the magnet slowly back and forth and observe the effect on the brightness of the bulb and the needle of the voltmeter. Repeat the same process for the other two regions.For which of the regions shown in the figure is the observed effect the strongest?
A common feature common of all generators is that they
You can switch the polarity of the bar magnet by clicking on the button with the bar magnet and two semi-circular arrows on the bottom right. Note how the positions of the north and south poles are switched every time you click on this button.Drag the bar magnet from left to right through the top coil, then repeat the same process after switching the polarity of the magnet. What effect, if any, does switching the polarity have on the brightness of the bulb and the needle of the voltmeter?
alpha particles that were delected encountered something what is this something decribed as by rutherford
10 dBs increase the final intensity by _____ times the original intensity
alpha particles were deflected back toward
which scientist provided more detail about atoms structure
-10 dBs decreases the final intensity to ____ the original intensity
What is the relationship between rayleigh scattering and frequency?