Which law says that the induced voltage is directly proportional to the magnetic flux? A.
Ohm’s Law
B.
Faraday’s Law
C.
Ampere’s Law
D.
Gauss’ Law
E.
Edison’s Law

Question

anonymous · Answer

this is b right?

anonymous · Answer

It should be faraday's law (b).
But voltage is proportional to "rate of change of magnetic flux" and not simply "magnetic flux".

anonymous · Answer

thankyou I thought so

anonymous · Answer

What is the magnetic force acting on an electron if its speed is 3.0 × 106 meters/second and the direction is perpendicular to a magnetic field of 0.020 teslas? The value of q = -1.6 × 10-19 coulombs.  
    A.
    F = 0 newtons
    B.
    F = -6.0 × 10-15 newtons
    C.
    F = -9.6 × 10-15 newtons
    D.
    F = -3.0 × 10-16 newtons
    E.
    F = -3.2 × 10-21 newtons

souvik · Answer

$$F=q*v \times B$$

anonymous · Answer

The magnetic force is given by F=Bqv sin$\theta$
here θ is 90.
Also put only magnitude of q.

souvik · Answer

there the angle between B(magnetic field) and the v(velocity of electron) is 90 degree..
so F=qvB

anonymous · Answer

do I need to calculate those then plug them in cause im bad at entering them into the equations

anonymous · Answer

you are given everything- B,q,v .just put them in eqn.