Understanding Energy, Charge, and Potential Difference in Electrical Circuits

This video tutorial explains how energy is transferred in electrical circuits, focusing on components like light bulbs and resistors. It covers the concept of potential difference, energy conservation, and provides examples of calculating energy transfer using the formula E = Q * V. The tutorial also discusses how electrons transfer energy to ions in resistors, resulting in thermal energy.

What type of energy do cells and batteries store before it is converted to electrical energy?

• Kinetic energy

• Thermal energy

• Light energy

• Potential energy

What is the potential difference across a component if 1 Coulomb of charge transfers 1 Joule of energy?

• 0.5 Volts

• 2 Volts

• 1 Volt

• 10 Volts

In which direction does the potential difference change as electrons travel through a resistor?

• From left to right

• From right to left

• From top to bottom

• From bottom to top

What is the formula used to calculate the energy transferred in an electrical circuit?

• E = V - Q

• E = Q + V

• E = Q * V

• E = Q / V

If a bulb has a potential difference of 3 volts and 60 coulombs of charge pass through it, how much energy is transferred?

• 180 Joules

• 60 Joules

• 20 Joules

• 120 Joules

How much charge flows through a resistor if 250 joules of energy is transferred and the potential difference is 10 volts?

• 35 Coulombs

• 25 Coulombs

• 45 Coulombs

• 15 Coulombs

What is the potential difference across a bulb if 12 coulombs of charge transfer 72 joules of energy?

• 7 Volts

• 4 Volts

• 6 Volts

• 5 Volts