Current and Charge OALH

Last updated almost 5 years ago
39 questions
Do Now:
1

Draw the circuit symbol for an ammeter.

1

Draw the circuit symbol for a variable resistor.

1

Define half-life

1

State which graph you would draw if your independent and dependent data was continuous.

1

Find the anomalous result and calculate the mean:
1.2 1.1 0.9 1.8 1.3 1.1

1

Challenge: Calculate the half-life of a sample if its activity falls from 8000 counts per second to 500 counts per second after 10 minutes.

Checkpoint Questions
1

What is the symbold for current?

1

What makes the current large?

1

What are the units for charge flow?

1

What is the symbol for time?

Key Knowledge LCWC
1

What is electic current made up of?

1

What determines how large the electrical current is?

1

Define current

1

What is the equation linking charge flow Q, current A and time t?

1

What are the units for charge flow Q?

1

What are the units for current I?

1

What are the units for time t?

1

What is electic current made up of?

1

What determines how large the electrical current is?

1

Define current

1

What is the equation linking charge flow Q, current A and time t?

1

What are the units for charge flow Q?

1

What are the units for current I?

1

What are the units for time t?

Recall Quiz:
1

What is the definition of current?

1

What two things determine how large the current is?

1

State the equation linking current, charge flow and time.

1

Name the units for Q, I and t

1

What makes up electric current?

I do
1

Calculate the current in a circuit with 120C of charge flowing every minute (60s).

We do:
1

Calculate the charge in a circuit with 5A of current every 10s

You do:
1

Calculate the current when 500C of charge flows every two minutes.

1

Calculate the current when 480C of charge flows every 1.5 mins

Plenary
1

Which quantity has the symbol I?

1

Which quantity is measured in Coulombs (C)?

1

What is the definition of current?

1

0.33A is telling you about which quantity?

1

44 C is telling you about which quantity?

1

What are the units used for time?