ETA EXAM QUESTIONS WITH COMPLETE ANSWERS

ETA EXAM QUESTIONS WITH
COMPLETE ANSWERS.



What will happen to the current through a resistor if a resistor suddenly decreases?
Answer - The current increases

If V=12 and R=6 in a series circuit, what is the current through the resistor? Answer - 2
Amps

What is the purpose of a volt meter? Answer - Measure potential difference

In a series circuit what is the total power calculation? Answer - P=E×I

Given a resistor Red Black Red Gold what is the value and tolerance of the resistor?
Answer - 2000+-5%

If V=10 and R=5 in a series circuit, what is the power produced? Answer - 20 Watts

What is the battery voltage for a carbon zinc battery? Answer - 1.5 volts

What is the battery voltage for a nickel Carbon battery? Answer - 1.25 volts

What is the battery voltage for a lithium battery? Answer - 3 volts

What is the battery voltage for a lead acid battery? Answer - 2.1 volts

Carbon microphone work on the principle of variable of? Answer - Resistor

What circuit has the same voltage drop on each device? Answer - Parallel

A thermistor resistance changes with temperature a negative coefficent Answer -