Basic Electronics- Voltage and Current MCQs

Question 1

What is the color code for a 220 omega.gif 5% resistor?

Accepted Answer

Red, Red, Brown, Gold

Answer

Orange, Orange, Black, Gold

Answer

Red, Red, Black, Gold

Answer

Red, Red, Brown, Silver

Question 2

If 60 J of energy are available for every 15 C of charge, what is the voltage?

Accepted Answer

4 V

Answer

60 V

Answer

15 V

Answer

0.25 V

Question 3

An atom's atomic number is determined by the number of:

Accepted Answer

protons

Answer

neutrons minus protons

Answer

electrons

Answer

neutrons

Question 4

A voltage will influence current only if the circuit is:

Accepted Answer

closed

Answer

open

Answer

insulated

Answer

high resistance

Question 5

Which resistive component is designed to be temperature sensitive?

Accepted Answer

Thermistor

Answer

Rheostat

Answer

Potentiometer

Answer

Photoconductive cell

Question 6

Primary batteries, unlike secondary batteries, may be:

Accepted Answer

used once

Answer

charged once

Answer

recharged over and over

Answer

stored indefinitely

Question 7

In practical applications, battery voltage:

Accepted Answer

is lowered as the load increases

Answer

is restored as soon as disconnect occurs

Answer

may be stored indefinitely

Answer

will be reduced to zero as power is drawn

Question 8

The negative and positive charge symbols are assigned (in that order) to the:

Accepted Answer

electron and proton

Answer

proton and electron

Answer

atom and nucleus

Answer

electron and element

Question 9

A voltmeter is used:

Accepted Answer

in parallel with the circuit

Answer

to measure current

Answer

in series with the circuit

Answer

to measure coulombs