Basic Electronics- Voltage and Current MCQs

Question 1

If the current in a circuit equals 0 A, it is likely that the

Accepted Answer

circuit is open

Answer

voltage is too high

Answer

resistance is too low

Answer

circuit has a short

Question 2

Current equals:

Accepted Answer

coulombs/time

Answer

coulombs × time

Answer

voltage/time

Answer

voltage × time

Question 3

What are the unit and symbol for current?

Accepted Answer

Ampere, I

Answer

Ampere, A

Answer

Coulomb, I

Answer

Ampere, Q

Question 4

Which part of an atom has no electrical charge?

Accepted Answer

Neutron

Answer

Electron

Answer

Proton

Answer

All of the above

Question 5

Which voltage source converts chemical energy to electrical energy?

Accepted Answer

Battery

Answer

Electrical generator

Answer

Solar cell

Answer

Electronic power supply

Question 6

An example of potential energy is:

Accepted Answer

a battery

Answer

tea-kettle steam

Answer

a moving vehicle

Answer

the sun

Question 7

If 40 C of charge flow past a point in 20 s, what is the current?

Accepted Answer

2 A

Answer

0.5 A

Answer

20 A

Answer

40 A

Question 8

Batteries differ from fuel cells in that

Accepted Answer

a battery is a closed system

Answer

a battery uses hydrogen and oxygen to create electricity

Answer

a battery uses a polymer electrolyte membrane

Answer

none of the above

Question 9

The removal of a non-neutral subatomic particle converts the atom into a:

Accepted Answer

charged ion

Answer

nucleus

Answer

heavier element

Answer

compound