955 test EXAM QUESTIONS AND ANSWERS 100% SOLVED (Newest 2025) State Ohm's law - Correct Answers ✅V=IXR R=V/I I=V/R If current goes down, what does resistance do? - Correct Answers ✅Reistance goes up If Voltage is CONSTANT and Resistance goes DOWN, what must Current do? - Correct Answers ✅Current HAS to go UP!What is the definition of a short circuit? - Correct Answers ✅Zero resistance. Circuit has high current, and zero resistance.What would cause Current to DECREASE in a circuit, IF Voltage remained CONSTANT? - Correct Answers ✅INCREASSE in Resistance What is a Transformer? - Correct Answers ✅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. 1 / 2
955 test EXAM QUESTIONS AND ANSWERS 100% SOLVED (Newest 2025) What are Transformers used for? - Correct Answers ✅Used to convert between high and low voltages and for impedance transformation.State the Power formula. - Correct Answers ✅P = V X I power equals voltage times current What are air core transformers main use? - Correct Answers ✅Radio frequency circuits ABOVE 20kHz What are iron core transformers main use? - Correct
Answers ✅Lower frequency: below 20kHz
To transmit electrical power what must a transformer have? - Correct Answers ✅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.*How does a Power Station function? - Correct Answers ✅Uses high voltage to reduce the amount and weight and therefore What is the symbol for a transformer? - Correct Answers ✅XX
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