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Total questions: 15
Worksheet time: 30mins
The phenomenon of inducing a voltage by changing the magnetic field around a conductor is called __________.
electromagnetic induction
Faraday’s induction
generated voltage
transformer induction
By accelerating the magnet inside the coil, the current in it ________
increases
decreases
remains constant
reverses
What is the SI unit for EMF?
Farad
Ohm
EMF
Volt
EMF can be induced in a circuit EXCEPT:
changing magnetic flux density
changing the area of the circuit
changing the angle
changing the polarity
As per Faraday's laws of electromagnetic induction, increasing the number of loops will______
strengthen the induced current
increase induced voltage
strengthen the induced voltage
decrease the induced current
What is the SI unit of Magnetic Flux?
Henry
Weber
W/s
Tesla
At the South Pole, the Earth’s magnetic field is directed upwards. If a plane is flying over the South Pole, which wing will have the higher potential?
The left wing
The right wing
Both wings have the same potential
None
The Law that states that the direction of an induced current is such that its own magnetic field opposes the original change in magnetic flux that induced the current.
Law of conservation of energy
Faraday’s Law
Lenz’s Law
all of the above
The positive and negative terminals of direct current have
no polarity.
fixed polarity.
variable polarity.
negative polarity always
Which circuit contain both capacitor and an inductor?
RC Circuit
RL Circuit
LC Circuit
RT Circuit
Which is a coil of conductor attached to a circuit for the purpose of inducing EMF?
Transformer
Diode
Transistor
Inductor
Which is used to adjust alternating current voltages and currents in circuits?
Transformer
Diode
Transistor
Inductor
Lenz’s law is named after the Russian scientist ______
Henrich Lenz
Heinrich Lens
Heinrich Lenz
Henrich Lens
Who invented the transformer?
Nikolah Tesla
Nikolai Tesla
Nikola Teslah
Nikola Tesla
In a transformer, if the secondary coil has more turns than the primary, then the alternating voltage produced is _____
increased
decreased
minimum
stable
