Physics Final (3b): CURRENT

Question 1

Electric Current

Answer 1

the flow of electric charge from one place to another

Question 2

Electric Circuits

Answer 2

a closed path through which charge can flow and returns to its starting point

Question 3

Direct Current (DC) Circuit

Answer 3

a circuit that has a current that flows only in one direction

Question 4

Batteries

Answer 4

produce electric potential difference between terminals with stored chemical energy

Question 5

Resistors

Answer 5

a material that presents some resistance to the motion of electrons

Question 6

Ohm’s Law

Answer 6

the guiding principle behind the motion of electrons in a circuit

Question 7

Electrical Power

Answer 7

the amount of energy used over time to move charges

Question 8

Equivalent Resistance

Answer 8

the resistance of a circuit that accounts for multiple resistors, either in parallel or in a series

Question 9

Ammeter

Answer 9

device for measuring current

Question 10

Voltmeter

Answer 10

device that measure voltages

Question 11

Short Circuit

Answer 11

very low resistance wire somehow creates a parallel circuit with another circuit component, and the current is completely or almost entirely redirected around the component