General Physics! 4. A beam of electrons is accelerated through a potential diffe

Question

General Physics!

4. A beam of electrons is accelerated through a potential difference of 11.0 kV before entering a velocity selector. If the B-field of the velocity selector is perpendicular to the velocity and has a value of 0.01 T, what value of the E-field is required (in the magnetic field region) if the particles are to be undeflected?

5. A square coil and a rectangular coil are each made from the same length of wire. Each contains a single turn. The long side of the rectangle is 2.2 times the short side. Find the ratio (square/rectangle) of the maximum torques that these coils experience in the same magnetic field when they contain the same current.

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4. A beam of electrons is accelerated through a potential difference of 11.0 kV before entering a velocity selector. If the B-field of the velocity selector is perpendicular to the velocity and has a value of 0.01 T, what value of the E-field is required (in the magnetic field region) if the particles are to be undeflected? V/m 5. A square coil and a rectangular coil are each made from the same length of wire. Each contains a single turn. The long side of the rectangle is 2.2 times eld when tev the short side. Find the rati(Tsquare/T e tangle of the maximum torques that hese coils experience n the same magnetic current on an e am

Explanation / Answer

Answer 4

qE = qvB

E = vB

where v is the velocity of the particle we can calculate this using potential difference

1/2 mv2 = qV

(0.5)(9.1 x 10-31)v2 = (1.6 x 10-19)(11,000)

v = 6.21 x 107 m/s

E = vB

E = (6.21 x 107)(0.01)

E = 6.21 x 105 V/m

As per chegg policy please ask second question as saperate question

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