Electronic components and digital electronics

Question 1 of 10

Three 1.5 V cells are connected in series. What is the total voltage?

Question 2 of 10

A potentiometer is a

Question 3 of 10

A relay is

Question 4 of 10

In digital electronics, a logic 1 usually represents

Question 5 of 10

Which logic gate gives an output of 1 only when both inputs are 1?

Question 6 of 10

An integrated circuit (IC) is

Question 7 of 10

A 555 timer in astable mode with R₁ = R₂ = 10 kΩ and C = 10 μF has a frequency of about

Question 8 of 10

A 555 timer IC is used to

Question 9 of 10

A resistor has the colour bands red, red and brown. What is its value?

Question 10 of 10

A transistor switch turns on when