955 test | Questions with 100% Verified Answers | Latest Update 2026/2027

955 test | Questions with 100% Verified Answers | Latest
Update 2026/2027
Question: State Ohm's law
Answer: V=IXR
R=V/I
I=V/R

Question: If current goes down, what does resistance do?
Answer: Reistance goes up

Question: If Voltage is CONSTANT and Resistance goes DOWN, what
must Current do?
Answer: Current HAS to go UP!

Question: What is the definition of a short circuit?
Answer: Zero resistance. Circuit has high current, and zero resistance.

Question: What would cause Current to DECREASE in a circuit, IF
Voltage remained CONSTANT?
Answer: INCREASSE in Resistance

Question: What is a Transformer?
Answer: 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.

Question: What are Transformers used for?
Answer: Used to convert between high and low voltages and for impedance transformation.

Question: State the Power formula.
Answer: P = V X I
power equals voltage times current

Question: What are air core transformers main use?
Answer: Radio frequency circuits ABOVE 20kHz

Question: What are iron core transformers main use?
Answer: Lower frequency: below 20kHz

Question: To transmit electrical power what must a transformer have?
Answer: Has a very high current OR very high voltage. High current means a high flow rate of
electrons. This requires a VERY large COPPER or ALUMINUM cable.