HL2 Electricity & Circuits

At a distance x from a point charge, the electric field strength is 12,000N/C. What is the electric field strength at a distance 2x from the point charge?

• 6,000 N/C
• 4,000 N/C
• 3,000 N/C
• 1,000 N/C

Which of the following is a unit for charge  expressed in fundamental units?

• Amperes
• Coulombs
• Ampere*seconds
• Volts per Joule

Two charges create an electric field as shown in the diagram. Which shows the correct types of charges?

• A = +
  B = +
• A = +
  B = -
• A = -
  B = +
• A = -
  B = -

Two charges experience a force of 12N. What is the new force when each charge is doubled and the distance between them is doubled? 

• 24N
• 12N
• 6N
• 3M

The electric field strength is greatest at location...

• A
• B
• Henry just farted
• lolololol

A charged particle travelling horizontally enters a uniform electric field. Which of the following is true?

• The charge must be positive
• The charge must be negative
• Both plates are positively charged
• The bottom plate only is positively charged

Two resistors have the same resistivity and cross-sectional area. One is twice as long as the other. What is the voltage on the longer resistor? 

• 12 V
• 8 V
• 6 V
• 4 V

Which graph shows how the current through an ideal ohmic resistor changes with voltage?

• A
• B
• C
• none of the above

Which graph shows how the current through a filament lamp changes with voltage?

• A

• B

• C

• none of the above

Which graph shows how the current through a thermistor changes with voltage?

• A

• B

• C

• none of the above