Ramsay Test Electrical Knowledge 1

Question 1

Which of the following best describes the relationship between voltage, current, and resistance in a DC circuit?

Accepted Answer

Current equals voltage divided by resistance

Answer

Ohm's Law states that I = V/R, meaning current (I) equals voltage (V) divided by resistance (R). This is one of the most fundamental principles in electrical theory.

Question 2

A circuit has a voltage of 120V and a resistance of 30 ohms. What is the current flowing through the circuit?

Accepted Answer

4 amps

Answer

Using Ohm's Law: I = V/R = 120/30 = 4 amps. Dividing voltage by resistance gives the current in amperes.

Question 3

What does a normally open (NO) contact do in a relay circuit?

Accepted Answer

Passes current only when the relay coil is energized

Answer

A normally open (NO) contact is open (no current flow) when the relay coil is not energized. When the coil is energized, the contact closes, allowing current to pass.

Question 4

Which wire color is typically used for the grounding conductor in standard US residential wiring?

Accepted Answer

Green or bare copper

Answer

In US wiring standards (NEC), green or bare copper wire is used for the equipment grounding conductor. White or gray is neutral, black is the hot lead.

Question 5

What type of circuit has two or more resistors connected end-to-end, sharing the same current path?

Accepted Answer

Series circuit

Answer

In a series circuit, components are connected end-to-end so the same current flows through each component. Total resistance is the sum of all individual resistances.

Ramsay Test Practice Test

Ramsay Test Practice Test

Ramsay Test Electrical Knowledge 1