Electricity - equations

Current is measured in what unit?

• ohms
• volts
• watts
• amps

Power is measured in what unit?

• amps
• volts
• watts
• ohms

Resistance is measured in what unit?

• ohms
• amps
• watts
• volts

What does the Greek letter Ω,  (i.e. Omega) represent?

• amps
• volts
• watts
• ohms

What is a kilo equal to?

• 100
• 1,000
• 100,000
• 1,000,000

what is the power of a lamp whose current is 6 A and the voltage across it is 120 V?

• 120 W
• 720 W
• 16 W
• 10 W

Which are the Equations for Power?

• Power = Energy Transferred / Time (P=E/t)

• Power = Work Done / Time (P=W/t)

• Power = Energy Transferred x Time (P=Et)

• Power = Work Done x Time (P=Wt)

What is the Equation for Charge Flow?

• Charge Flow = Current x Time (Q=It)

• Charge Flow = Current / Time (Q=I/t)

• Charge Flow = Time / Current (Q=t/I)

What is another Equation for Power?

• Power = Potential Difference x Current (P=IV)

• Power = Potential Difference / Current (P=V/I)

• Power = Current / Potential Difference (P=I/V)

Potential difference (pd) / voltage equation

• V= IR

• 
  

  $V\ =\ \frac{I}{R}$

• $V\ =\ \frac{R}{I}$