• Ohms
• henrys
• RPMs

• capacitance
• Inductance
• A time delay
• A relay
• #### 3.  Which of the following is the correct formula for calculating total parallel inductive reactance in a parallel circuit?

• XLT = XL1 + XL2 + XL3 ...
• XLT = XL1 * XL2 * XL3...
• XLT = 1/[(1/XL1) + (1/XL2) + (1/XL3) ... ]
• XLT = (1/XL1) + (1/XL2) + (1/XL3) ...
• #### 4.  Magnetic flux depends on

• Magnetic Field
• Area
• Angle between Magnetic Field and Area Vector
• All of the above
• #### 5.  Where is the energy being stored in an inductor carrying a steady current ?

• In the electric field of the coil
• In the circuit
• In the power supply
• In the magnetic field of the coil
• #### 6.  Which of the following has the largest inductance?

• A solenoid of radius 1 cm, length 5 cm, and with 100 turns of wire per centimeter
• A solenoid of radius 3 cm, length 1 cm, and with 100 turns of wire per centimeter
• A solenoid of radius 2 cm, length 2 cm, and with 100 turns of wire per centimeter
• A solenoid of radius 1 cm, length 1 cm, and with 200 turns of wire per centimeter
• A solenoid of radius 2 cm, length 5 cm, and with 100 turns of wire per centimeter

• brighter
• stronger
• weaker
• invisible
• #### 8.  In the diagram shown, which current is changingmore rapidly?

• Current 𝐼1
• Current 𝐼2
• Both are constant
• Both are changing at the same rate
• Both are zero

• 11 mV
• 22 mV
• 84 mV
• 58 mV
• 185 mV
• #### 10.  Energy can be stored in many ways. What is theprimary energy storage form of an inductor?

• Kinetic
• Electric field
• Magnetic field
• Gravitational field
• Spring displacement

• 22 mV
• 36 mV
• 58 mV
• 90 mV
• 230 mV
• #### 12.  Which of the following are units for inductance?I. HenryII. Joules/(Ampere)2III. Volt . second/Ampere

• I only
• II only
• III only
• I and II only
• I, II and III

• true
• false
• #### 14.  The diagram shows an inductor that is part of a circuit. The direction of the emf induced in the inductor is indicated. Which of the following is possible?

• The current is constant and rightward
• The current is constant and leftward
• The current is increasing and rightward
• The current is increasing and leftward
• None of the above

• 1.10 𝑚𝐽
• 1.10 𝑘𝐽
• 9.1 1𝑘𝐽
• 5.21 𝑘𝐽
• 7.48 𝑘𝐽

• false
• true
• #### 17.  A 10-turn ideal solenoid has an inductance of 3.5 mH. When the solenoid carries a current of 2.0 A the magnetic flux through each turn is:

• 0 Wb
• 3.5 x 10^–4 Wb
• 7.0 x 10^–4 Wb
• 7.0 x 10^–3 Wb
• 7.0 x10^–2 Wb
• #### 18.  Current is maximum in AC generator when

• Area Vector is parallel to magnetic field
• Area Vector is Antiparallel to magnetic field
• Area Vector is 120 degree with magnetic field
• Area Vector is Perpendicular to magnetic field
• #### 19.  A long narrow solenoid has length ℓ and a total of N turns, each of which has cross-sectional area A. Its inductance is:

• μ0 N^2 Aℓ
• μ0 N^2 A/ℓ
• μ0 NA/ℓ
• μ0 N^2 ℓ/A
• none of these
• #### 20.  Which of the following factors DOES NOT affect the self inductance of a coil?

• The length of the coil
• The current flows in the coil
• The number of turn of the coil
• The cross sectional area of the coil
• #### 21.  The phenomenon due to which there is an induced current in one coil due to the current in a neighboring coil is?

• Mutual induction
• Electromagnetism
• Self induction

• 0 A/s
• 0.5 A/s
• 50 A/s
• 250 A/s
• 500 A/s

• 1.17 A
• 2.31 A
• 25.6 A
• 44.2 A
• 107.1 A
• #### 24.  The production of electric current by a changing magnetic field is called ____________________________________.

• induced current
• electromotive force
• electromagnetic induction
• internal resistance
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