Calculating Current, Resistance and Voltage Across Circuits

What is resistance measured in?

• volts
• Amperes (Amps)
• Ohms
• Coulombs

Three  2 Ohm resistors are placed in series.
What is the total resistance of the circuit?

• 2 Ohms
• 6 Ohms
• 24 Ohms
• Depends on the battery

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

• 50 Ω
• 100 Ω
• 300 Ω
• 450 Ω

What is the formula for R_T for resistors in series?

• R_t=I/V
• R_T=R₁+R₂
• R_T=1/R₁+1/R₂
• 1/R_T=1/R₁+1/R₂

What is the formula for R_T for resistors in parallel?

• R_t=I/V
• R_T=R₁+R₂
• R_T=1/R₁+1/R₂
• 1/R_T=1/R₁+1/R₂

Every time the number of components in a series circuit increases,

• ... the current decreases more
• ... the current increases more
• ... the voltage increases more

Power outlets in your home are arranged ...

• In series so that it's simpler

• In parallel so that they all receive the same current

• In parallel so that they all receive the same voltage

resistance?

• 1/rtot = (1/5) + (1/8) + (1/3) Ω
• 120 Ω
• 1.5189873 Ω
• 1/rtot = (1/5) * (1/8) * (1/3) Ω

Current is a measure of: 

• force that moves a charge past a point 
• resistance to the movement of a charge past a point 
• energy used to move a charge past a point 
• amount of charge that moves past a point per unit time 

A 3A current flows through a television. How long would it take for 1500C to flow through it?

• 4500s

• 500s

• 50s

• 450s