1. What is the name for the effect from a changing magnetic field that creates a
ID: 1556799 • Letter: 1
Question
1. What is the name for the effect from a changing magnetic field that creates a force on or electrical potential difference for the free charges in a conducting object? 2. To which electric circuit property does this effect correspond? 3. What is the dot product of an area swept out by a magnetic field called? a. mathematical symbol? b. SI units? c. dimensions? 5. What is the law of induction (Faraday's law) that relates changing magnetic field and or area with the resulting effect on a conducting loop? 6. What sets the direction of magnetically induced current in a conducting loop (Lenz's law)? 7. How does a galvanometer work? (dentify three crucial components and say how the interaction between each produces a measurement of the current in the galvanometer) 8. What is the strength of the magnetic field at the center ofa coil ofwire with N turns along an axis of length L having a current I flow through it?Explanation / Answer
1.
the changing magnetic field that produces a force or a potential difference. This is Faraday's law.
dV = BvL
Induced emf = -d(phi)/dt =- d(BA)/dt
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