Electrical Circuits

Question 1

Components of a circuit

Answer 1

Power source (battery), load (globe etc.), conductive pathway (wires)

Question 2

Voltage

Answer 2

Potential difference. A measure of the amount of energy in each electron. Measured in Volts (V)

Question 3

Current

Answer 3

A measure of the number of electrons passing a point per second. Measured in Amps (A), used in formulas as (I).

Question 4

Resistance

Answer 4

A measure of how difficult it is for electrical current to flow through a conductor. Measured in Ohms (Ω), in formulas as (R).

Question 5

Ohm’s Law

Answer 5

R=V/I. Can also be switched to V=A x R or I=V/R.