Power supplies and Ohms law

Question 1

what is the potential difference of mains energy

Answer 1

230V

Question 2

is mains energy DC or AC

Answer 2

AC or alternating current

Question 3

does a battery use an AC or a DC

Answer 3

DC or direct current

Question 4

fill in the gaps: batteries convert ________ energy into________ energy

Answer 4

chemical, electrical

Question 5

what is the equation for Ohms law?

Answer 5

V=IR or voltage= current * resistance

Question 6

What are the units for voltage, resistance and current

Answer 6

volts(V), Ohms(Ω) and amperes(A)