WorksheetsElectron Beam deflection
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
The force on a charged particle is given by
a)
F=mg
b)
F=q/E
c)
F=qE
d)
F=E/q
2.
In the formula F=qE
a)
E stands for Energy
b)
E stands for Electrical Energy
c)
E stands for Electric Field
d)
E stands for Electric Potential
3.
If the electric field is uniform it can be calculated using the formula
a)
E=Vd
b)
E=V/d
c)
E=kQ/r
d)
E=kQ/r2
4.
Which of the following is a unit of electric field
a)
NC-1
b)
V
c)
Nm
d)
JC-1
5.
A pair of parallel plates have a potential difference of 5kV between them. They are separated by 10cm.
The field between the plates is
The field between the plates is
a)
0.5Vm-1
b)
50 Vm-1
c)
500 Vm-1
d)
50 000 Vm-1
6.
The acceleration of a particle, charge q and mass m in an electric field E is
a)
a = qE
b)
a = qE/m
c)
a = E/qm
d)
a = Em/q
7.
The acceleration of an electron,
charge 1.6 x 10-19C
mass 9.1 x 10-31kg
in an E field 5 x 105 Vm-1 is
charge 1.6 x 10-19C
mass 9.1 x 10-31kg
in an E field 5 x 105 Vm-1 is
a)
9.8 ms-2
b)
8.8 x 1016 ms-2
c)
2.8 x 10-46 ms-2
d)
2.8 x 10-6 ms-2
8.
Which of the following will increase the deflection of a particle beam in an E field
1 Doubling the deflecting voltage
2 Halving the distance between the deflecting plates
3 Increasing the speed of the particles
1 Doubling the deflecting voltage
2 Halving the distance between the deflecting plates
3 Increasing the speed of the particles
a)
1 only
b)
1 and 2
c)
2 and 3
d)
1, 2 and 3
9.
Which of the following will decrease the deflection of a particle beam in an E field
1 Using particles with a higher mass
2 Using particles with a higher charge
3 Decreasing the length of the E field
1 Using particles with a higher mass
2 Using particles with a higher charge
3 Decreasing the length of the E field
a)
1 only
b)
1 and 2
c)
1 and 3
d)
1, 2 and 3
10.
A slower moving particle will be deflected more because
1. Forces have a bigger effect on slow moving particles
2. It will spend longer in the electric field
3. The gravitational force will have more time to deflect the particle.
1. Forces have a bigger effect on slow moving particles
2. It will spend longer in the electric field
3. The gravitational force will have more time to deflect the particle.
a)
1 only
b)
2 only
c)
2 and 3
d)
1 and 2
100 %
