Electrical Power And Potential Difference

Question 1

Power (W) = Energy Transferred (__) / _______ (S)

Answer 1

J…Time…

Question 2

Each Electron Transfers a Small Amount of Energy to the Heart From the ___________. So the Total Energy Transferred to the Artificial Heart Each Second is Big Enough to Allow the Appliance to ___________.

Answer 2

Battery…Function…

Question 3

For Any Electrical Appliance:

Answer 3

• The Current through it is the Charge that Flows through it Each Second.
• The Potential Difference Across it is the Energy Transferred to the Appliance by Each Coulomb of Charge that Passes through it.
• The Power Supplied to it is the Energy Transferred to it Each Second. This is the Energy Transferred by an Electric Current Every Second.

Question 4

Power Supplied (W) = Current (__) x Potential _____________ (V).

Answer 4

A…Difference…

Question 5

For a Current in a Resistor of Resistance:

Answer 5

• The Potential Different Across the Resistor = Current x Resistance.
• The Power Supplied to the Resistor = Current x Power Supplied.