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955 test Questions and Correct Answers/
Latest Update / Already Graded
State Ohm's law
Ans: V=IXR
R=V/I
I=V/R
If current goes down, what does resistance do?
Ans: Reistance goes up
If Voltage is CONSTANT and Resistance goes DOWN, what must
Current do?
Ans: Current HAS to go UP!
What is the definition of a short circuit?
Ans: Zero resistance. Circuit has high current, and zero
resistance.
What would cause Current to DECREASE in a circuit, IF Voltage
remained CONSTANT?
All rights reserved © 2025/ 2026 |
, Page |2
Ans: INCREASSE in Resistance
What is a Transformer?
Ans: An electrical device that transfers energy from one
electrical circuit to another by magnetic coupling, aka: Mutal
Induction. One set of windings induce a voltage in the other set
of windings.
What are Transformers used for?
Ans: Used to convert between high and low voltages and for
impedance transformation.
State the Power formula.
Ans: P = V X I
power equals voltage times current
What are air core transformers main use?
Ans: Radio frequency circuits ABOVE 20kHz
What are iron core transformers main use?
All rights reserved © 2025/ 2026 |
955 test Questions and Correct Answers/
Latest Update / Already Graded
State Ohm's law
Ans: V=IXR
R=V/I
I=V/R
If current goes down, what does resistance do?
Ans: Reistance goes up
If Voltage is CONSTANT and Resistance goes DOWN, what must
Current do?
Ans: Current HAS to go UP!
What is the definition of a short circuit?
Ans: Zero resistance. Circuit has high current, and zero
resistance.
What would cause Current to DECREASE in a circuit, IF Voltage
remained CONSTANT?
All rights reserved © 2025/ 2026 |
, Page |2
Ans: INCREASSE in Resistance
What is a Transformer?
Ans: An electrical device that transfers energy from one
electrical circuit to another by magnetic coupling, aka: Mutal
Induction. One set of windings induce a voltage in the other set
of windings.
What are Transformers used for?
Ans: Used to convert between high and low voltages and for
impedance transformation.
State the Power formula.
Ans: P = V X I
power equals voltage times current
What are air core transformers main use?
Ans: Radio frequency circuits ABOVE 20kHz
What are iron core transformers main use?
All rights reserved © 2025/ 2026 |
