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Modelling Current Electricity

Last updated over 5 years ago
46 questions
Unit: Current Electricity
Lesson Title: Modelling Current Electricity
LO: Recall and manipulate the equations for current and voltage.
Do Now
1

Complete the following conversions.
  1. 65 kilovolts to volts
  2. 0.23 milliamperes to centiamperes
  3. 9343 centicoulombs to kilocoulombs

1

Write the following in standard form.
  1. 9423 seconds
  2. 38,000,000,000 metres
  3. 0.000042 grams

1

Give the following to three significant figures.
  1. 563,495 watts
  2. 0.43903 tesla

1

State the units of the following quantities.
  1. current
  2. potential difference
  3. charge

1

Describe the relationship between x and y in the graph at right.

Explanation
1

Which of the following is NOT a requirement for an electric circuit?

1

Which of the two requirements is missing from the circuit in the image, preventing the flow of charge?

1

Which of the two requirements is missing from the circuit in the image, preventing the flow of charge?

7

Match the part of the loaf lorries model to the concept or quantity it represents.

Draggable itemCorresponding Item
road
wires
difference in loaves
battery
lorries per second
charges
loaves
component
lorries
potential energy
shop
current
bakery
potential difference
Key Information
1

Define electric current.

1

State the equation which links current, charge, and time.

1

State the equation which links potential difference, charge, and energy.

1

State the units for charge, energy, current, potential difference, and time.

Multiple Choice
1

Which of the following is the unit for charge?

1

Which of the following is NOT a correct arrangement of the equation that links charge, energy, and current?

1

Which of the following is NOT a correct arrangement of the equation that links potential difference, charge, and energy?

1

Which of the following is true about the electrical circuit in your flashlight?

1

If a battery provides a high voltage, it can ____.

1

An electrochemical cell can be a source of charge in a circuit. The charge that flows through the circuit originates in the cell.

1

Charge becomes used up as it flows through a circuit. The amount of charge that exits a light bulb is less than the amount that enters the light bulb.

1

A current is said to exist whenever _____.

Guided Practice

1

Calculate current if time is 60 seconds and charge is 67 coulombs.

Step 1: current = charge / time, I = Q / t
Step 2: No rearrangement needed!
Step 3:
Step: 4

1

Calculate charge if time is 21 kilosecondsand current is 96 centiamperes.
Step 1: current = charge / time, I = Q / t

Independent Practice
For the following questions, round all answers to 2 significant figures.
1

Calculate charge if time is 37 seconds and current is 6 amperes.

1

Calculate current if time is 47 seconds and charge is 7 coulombs.

1

Calculate time if charge is 66 coulombs and current is 45 amperes.

1

Calculate potential difference if energy is 57 joules and charge is 79 millicoulombs.

1

Calculate charge if potential difference is 35 volts and energy is 46 joules.

1

Calculate energy if potential difference is 59 volts and charge is 65 millicoulombs.

1

Calculate current if time is 100 seconds and charge is 2800 millicoulombs.

1

Calculate charge if time is 7700 seconds and current is 4800 centiamperes.

1

Calculate time if charge is 4100 millicoulombs and current is 7700 centiamperes.

1

Calculate potential difference if energy is 51 kilojoules and charge is 35 centicoulombs.

1

Calculate energy if potential difference is 91 millivolts and charge is 7 centicoulombs.

1

Calculate charge if potential difference is 18 millivolts and energy is 13 kilojoules.

1

Calculate charge if time is 2.9 centiseconds and current is 6.3 amperes.

1

Calculate time if charge is 9.3 coulombs and current is 4.3 amperes.

1

Calculate current if time is 5.5 centiseconds and charge is 1.5 coulombs.

1

Calculate charge if potential difference is 0.29 kilovolts and energy is 0.02 kilojoules.

1

Calculate potential difference if energy is 0.06 kilojoules and charge is 0.83 kilocoulombs.

1

Calculate energy if potential difference is 0.02 kilovolts and charge is 0.08 kilocoulombs.

1

Calculate charge if time is 40 milliseconds and current is 870 amperes.

1

Calculate current if time is 690 milliseconds and charge is 730 centicoulombs.

1

Calculate time if charge is 620 centicoulombs and current is 980 amperes.

1

Calculate potential difference if energy is 440 joules and charge is 660 coulombs.

Bonus!
If you have answered all of the above questions, study the following flash card set, then play the matching game. Submit your high score in the final question answer box.
Flashcards
Matching
1

[Optional] What was your high score on the above?