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Quiz 5
Mdcat-past-papers - ETEA - Physics Quiz
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Board: ETEA | Subject: Physics |
81. Which of the following quantities is correctly matched to its unit:
Electric charge: Ampere (A)
Current: Volt
Electric power: Watt (W)
Resistance: Coulomb
82. What is the increase in force between two charges if the separation between them is decreased by 50 percent:
Becomes four times
Increases by half
Doubles
Triples
83. According to Coulomb's law, what happens to the electrostatic force between the 2-point charges if the distance between them is doubled?
The force becomes one-fourth
The force doubles
The force becomes half
The force remains the same
84. Magnetic lines of force are:
Imaginary lines which show actual magnetic field
Actual lines which show actual magnetic field
Imaginary lines which show imaginary magnetic field
Actual lines which show imaginary magnetic field
85. The instantaneous power supplied to a circuit is a product of the:
Instantaneous current & instantaneous voltage
Instantaneous voltage, instantaneous conductance
Instantaneous voltage, instantaneous conductance
Instantaneous current, instantaneous power
86. Two charges Q₁ = 3μC and Q₂ = –1μC are separated by 100cm. The electric potential is zero at a point:
25cm from Q2
75cm from Q₂
50cm from Q₁
33.3cm from Q₁
87. The SI unit of electric potential is:
Volt
Coulomb
Ampere
Ohm
88. If amount of work W is required to move charge Q, then potential difference is:
V = W/Q
V = Q/W
V = W/Q
Q = V/W
89. Two point charges +5μC and –5μC are placed at points A and B separated by 2d. Electric potential at midpoint M is:
2kQ/d
–kQ/d
kQ/d
Zero
90. Electron Volt (eV) is another unit of:
Charge
Current
Energy
Power
91. The energy stored in a capacitor is given by:
1/2 QV2
1/2 CV2
U = ½ QC
U = Q/2V
92. The SI unit of capacitance is:
Watt
Henry
Farad
Joule
93. In the case of parallel plate capacitor, when the distance between the two plates is reduced to half and the area of the plate is doubled the capacitance:
Capacitance remains same
Capacitance doubles
Increases six times
Increases four times
94. If the dielectric material between the plates of a capacitor is removed, what happens to the electric field between the plates?
Become zero
increases
Decreases
Remains the same
95. Capacitance of a capacitor increases with a decrease in:
Dielectric constant
Permittivity
Plate area
Plate separation
96. Magnetic flux is maximum when the angle between the magnetic field and the normal to the plane of finite area is:
Zero degree
90 degrees
60 degrees
30 degrees
97. Which of the following statement is true about the magnetic field inside a solenoid?
It is along the axis of the coil
It is strongest at the ends of solenoid
It is circular around the wires
It is zero when current flows through it
98. A charged particle entered in a magnetic field anti-parallel to the field, magnetic force on this particle is:
BINA
Bev sin θ
Zero
|q|Lv
99. When a neutron enters into a magnetic field B perpendicularly with velocity v, its acceleration is:
Zero
Centripetal
Positive
Uniform and non-zero
100. In a magnetic field, a photon passing through it is deflected towards:
North Pole
South Pole
Opposite Pole
None of these
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