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Physics
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Quiz 6
Mdcat-past-papers - SZABMU - Physics Quiz
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Board: SZABMU | Subject: Physics |
101. When t = RC charge deposited "q" on a capacitor is:
q = 63.2% q
q = 36.8% q
q = 72% q
q = 42% q
102. Energy stored in a capacitor is equal to:
CV
CV2/2
QV/2
C/2V
103. The unit of magnetic flux is:
Weber (Wb)
Wbm
Wbm⁻¹
Wbm⁻²
104. The dimension of magnetic field is same as that of:
Magnetic flux density
Magnetic flux
Magnetic force
Work done
105. Magnetic flux is the dot product of:
Magnetic field and scalar area
Magnetic field & vector area
Magnetic field per unit scalar area
Magnetic field per unit vector area
106. When current is coming out of the paper in a straight conductor, then direction of magnetic field is:
Clockwise
Anti-clockwise
Downward
Upward
107. 1 Wb =
1 Nm/A
1 Nm²A⁻¹
1 Nm⁻¹A
1 NmA⁻¹
108. According to Fleming's Right Hand Rule, when you stretch out the forefinger, middle finger and thumb so that they are at right angles to each other, the middle finger will point in the direction of:
Force
Magnetic field
Volt
Current
109. The force exerted on charged particle will maximum when it enters the magnetic field at:
60°
90°
0°
45°
110. When a charged particle enters the magnetic field parallel, then it will:
deflect toward north
deflect toward south
Move straight
in circular path
111. The SI unit for magnetic induction B is tesla (T). 1 Tesla is equal to:
NA⁻¹m⁻¹
NmA⁻¹
N⁻¹mA
NmA⁻¹
112. In Fleming right hand rule the middle finger indicates:
Force
Magnetic field
Induced current
Volt
113. The phenomenon in which a changing current in one coil induces an emf in another coil is:
Self induction
Mutual induction
Eddy current
Choke
114. Transformer works on the principle of:
Lenz' law
Faraday's law
Mutual induction
Ampere's law
115. The efficacy of transformer is:
60%
70%
80%
90%
116. Lenz's law is also a statement of law of conservation of:
Charge
Energy
Momentum
Mass
117. The induced emf will flow in such a direction so as to oppose the cause that produces it. It is statement of:
Ampere's law
Faraday Law
Lenz's law
Joule's law
118. The transformer depends on the use of:
Direct current
Alternating current
Direct and alternating current
Direct and alternating voltage
119. Transformer works on the principle of:
Half wave rectification
Mutual induction
Mutual induction
Full wave rectification
120. The transformer depends on the use of:
Direct current
Alternating current
Direct and alternating current
Direct and alternating voltage
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