PLTW POE Unit 1.2 Review

What is true about the current through a series circuit?

• Current is added up across the light bulbs

• The same current flows through all three light bulbs.

• Current is the same voltage as the battery

• The electrical current is divided between the three light bulbs.

what is this symbol for?

• light bulb
• switch
• battery
• resistor

A closed electrical circuit in which the current is divided into two or more paths and then returns via a common path to complete the circuit.

• Series

• Parallel

• Open

• Dihexihedral

What is the unit of measurement for Power?

• Joules
• Newtons
• Watts
• Meters

How to you calculate the total resistance in a series circuit?

• R1 + R2+ R3

• R1 - R2 - R3

• 1/R1 + 1/R2 + 1/R3

• R1 = R2 = R3

Resistance is measured in ___. 

• watts. 
• amps.
• ohms.

Voltage is measured in __.

• volts.
• watts.
• coulombs. 

Current has units: 

• kilowatt·hour 
• ampere 
• coulomb 
• volt 

An electric circuit with only one path through which charge can flow

• Parallel Circuit

• Series Circuit

• Open Circuit

• none of the above

Which formula is used to calculate total resistance for a parallel circuit?

• $R_T=\frac{1}{\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}...}$

• $R_T=R_1+R_2+R_3...$

• $R_T=\frac{1}{R_1+R_2+R_3\ ...}$