Resistance!

What is the unit of measurement for resistance?

• Voltage

• Ampere

• Watts

• Ohms

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

How do you calculate total resistance in a parallel circuit?

• R1 + R2 + R3

• R1 - R2 - R3

• 1/R1 +1/R2 + 1/R3 = 1/RT

• R1 = R2 = R3

What is Resistance?

• the degree to which a circuit component opposes the passage of an electric current, causing energy dissipation
• How hard the energy is pushed
• The amount of charges that pass by a given point per second
• None of the above

What is the equivalent or total resistance (R_e) across this circuit?

• 3 kΩ

• 10 kΩ

• 13 kΩ

• 18 kΩ

Which resistor will prevent the most current flow?

• 1 ohm
• 100 ohms
• 1000 ohms
• 0.5k ohms

How does resistance affect current?

• less resistance - less current
• more resistance - less current
• more resistance - more current
• resistance does not affect current

How would the equivalent resistance be determined?

• 1 / Req = (1/5) + (1/8) + (1/3) Ω

• 120 Ω

• 1.5189873 Ω

• 1 / Req = (1/5) * (1/8) * (1/3) Ω

the formula to find current when the values of V and R are known is

• I = V²R

• I = V/R

• I = R/V

• I=VR

What size resistor would produce a 3 Amp current flow with a 12 Volt battery

• 1 Ohm
• 3 Ohms
• 4 Ohms
• 12 Ohms