Year 9 Electricity Review

What is a closed path for electrons to flow through?

• static electricity
• circuit
• amperes

Identify the conductor below.

• cloth rag
• plastic bottle
• gold ring

Identify the insulator below.

• aluminum foil
• paperclip
• rubber eraser

Tags

NGSS.5-PS1-3

Thicker wires have _______ resistance than thinner wires.

• more
• less
• the same

As the resistance in a circuit increases, the electric current __________.

• increases
• decreases
• stays the same

Which formulas represents Ohm's law?

• V=IR
• R=IV
• I=RV

Electric current is measured in ______.

• Watts
• Volts
• Amperes

Which subatomic particles have a positive charge?

• neutrons
• electrons
• protons

What is the unit for resistance?

• Volts
• Amperes
• Ohms

How many volts are in a circuit with a battery that has a resistance of 10 Ohms and a current of 2 Amps? 

• .5 Volts
• 5 Volts
• 20 Volts