06 Electricity 2

What is the unit of Current?

• Ohm, Ω

• Amp, A

• Volt, V

• Joule, J

What is the unit of Potential Difference?

• Ohm, Ω

• Amp, A

• Volt, V

• Joule, J

What is the unit of Resistance?

• Ohm, Ω

• Amp, A

• Volt, V

• Joule, J

Which has a higher resistance?

• Conductors

• Insulators

What is the resistance of a bulb which has a potential difference of 8V, and a current of 2A

• 6 Ω

• 4 Ω

• 2 Ω

• 10 Ω

What is the resistance of a buzzer which has a potential difference of 12V, and a current of 2A?

• 6 Ω

• 4 Ω

• 14 Ω

• 10 Ω

What is the resistance of a swtich which has a potential difference of 6 V, and a current of 0.5 A?

• 6 Ω

• 12 Ω

• 3 Ω

• 9 Ω

What is the total resistance of both bulbs?

• 6 Ω

• 4Ω

• 3Ω

• 7 Ω

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

How does resistance affect current?

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