EIAT and NEIEP Test Electrical Theory 2

Question 1

What is the formula for calculating electrical power?

Accepted Answer

P = V × I

Answer

Electrical power (in watts) is calculated as P = V × I, where V is voltage and I is current.

Question 2

In a parallel circuit, the voltage across each branch is:

Accepted Answer

The same across all branches

Answer

In a parallel circuit, all branches share the same voltage because they are connected between the same two nodes.

Question 3

An inductor opposes changes in:

Accepted Answer

Current

Answer

An inductor opposes changes in current by generating a back-EMF (electromotive force) that resists the change.

Question 4

What is the relationship between conductor cross-sectional area and resistance?

Accepted Answer

Larger area means lower resistance

Answer

A larger cross-sectional area provides more paths for electron flow, reducing overall resistance.

Question 5

Which material is the best electrical conductor?

Accepted Answer

Silver

Answer

Silver has the highest electrical conductivity of all metals, though copper is more commonly used due to cost.

EIAT and NEIEP Test Practice Test