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Physics 10 Chapter 16 - Basic Electronics - 4
1.
Due to which force, electrons are repelled by the negative charges?
a) F = q E
b) F = E / q
c) F = q / E
d) F = P A
2.
What is ‘q’ in the formula; “F = q E”?
a) Proton charge
b) Electron charge
c) Field intensity
d) Field strength
3.
What is ‘E’ in the formula; “F = q E”?
a) Proton charge
b) Field lines
c) Electric field
d) Electron charge
4.
Which of the following relation is correct about the degree of deflection of electrons from their original direction?
a) Degree of deflection ∞ Strength of the electric field
b) Degree of deflection = 1 / Strength of the electric field
c) Degree of deflection ∞ 1 / Strength of the electric field
d) 1/ Degree of deflection ∞ Strength of the electric field
5.
At which angle, magnetic field is applied to the beam of electrons?
a) At 180° angle
b) At 60° angle
c) At 90° angle
d) At 45° angle
6.
By using which magnet, magnetic field is applied to the beam of electrons at right angle?
a) By usingsingle pole magnet
b) By usingnon-polar magnet
c) By usinghorse shoe magnet
d) By usingbar magnet
7.
What is the instrument called that is used to display the magnitudes of changing electric currents or potentials?
a) SONAR
b) Cathode-ray oscilloscope
c) Multimeter
d) MRI
8.
What is displayed by the cathode-ray oscilloscope?
a) (d) Direction of changing electric potential
b) (c) Magnitudes of changing electric potentials
c) (b) Magnitudes of changing electric currents
d) (a) Both b and c
9.
Where the information of CRO is displayed?
a) On the screen of a neutron-ray tube
b) On the screen of a cathode-ray tube
c) On the screen of a proton-ray tube
d) On the screen of a anode-ray tube
10.
What is the instrument called that is used to display the magnitudes of changing electric currents or potentials?
a) MRF
b) MRI
c) CRO
d) SONAR
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