Electricity Revision - Current, Voltage and Resistance

Physics Paper 1: Electricity Revision

LO: To review Current, Potential Difference and Resistance 

Multiple Choice

Memory Platform

Question: What is the correct circuit symbol for a bulb?

Multiple Choice

Memory Platform

Question: What is the correct circuit symbol for a fuse?

Multiple Choice

Memory Platform

Question: What is the correct circuit symbol for a switch?

Electric Current

• Electric current is a flow of charge.

• Current is measured in Amperes (Amps)

• Charge is measured in Coulombs

Multiple Choice

Current is measured in:

• Amperes (A)

• Coulombs (C)

Multiple Choice

Charge is measured in:

• Amperes (A)

• Coulombs (C)

How does current flow in a circuit?

• To make a charge flow around a circuit there has to be something providing a potential difference (push), like a battery.

• The potential difference is also known as the volts/voltage (V)

Multiple Choice

Which part of the circuit provides the push (potential difference)?

• The wire

• The battery

• The bulb

Batteries provide the potential difference (voltage/push) to a circuit.

Multiple Choice

Current is measured in

• Amperes (A)

• Coulombs (C)

• Volts (V)

Multiple Choice

Potential difference is measured in

• Amperes (A)

• Coulombs (C)

• Volts (V)

Resistance

• Resistance is anything that slows down the flow of charge.

• Its units are  Ohms, Ω

• If the resistance of a circuit increases, a smaller current will flow

Multiple Choice

What is resistance?

• Anything that increases the flow of current

• Anything that decreases the flow of current

Multiple Choice

What are the units for resistance?

• Amperes (A)

• Volts (V)

• Ohms

Multiple Choice

Current is measured in:

• Amperes (A)

• Coulombs (C)

Multiple Choice

Potential difference is measured in

• Amperes (A)

• Coulombs (C)

• Volts (V)

Multiple Choice

Which part of the circuit provides the push (potential difference)?

• The wire

• The battery

• The bulb

How fast charge flows - Equation Units

• Q= Charge flow - Coulombs (C)

• I = Current - Amps (A)

• T= Time - Seconds (S)

Multiple Choice

What equation would you use to measure current (I)?

 

• Q $\div$  T

• I $\div$  Q

• T  $\times$  Q

• I  $\times$  T

Multiple Choice

What equation would you use to measure Charge (Q)?

 

• Q $\div$  T

• I $\div$  Q

• T  $\times$  Q

• I  $\times$  T

Multiple Choice

What equation would you use to measure Time (T)?

 

• Q $\div$  T

• Q $\div$  I

• T  $\times$  Q

• I  $\times$  T

Multiple Choice

What are the units for charge?

 

• Coulombs (C)

• Amps (A)

• Time (S)

Multiple Choice

What are the units for time?

 

• Coulombs (C)

• Amps (A)

• Seconds (S)

Multiple Choice

What are the units for current?

 

• Coulombs (C)

• Amps (A)

• Seconds (S)

Poll

How did you feel about the structure of todays lesson?

Poll

Would you like to see more lessons like this?

• Yes! I really like the way this lesson was today.

• No way! I prefer our usual lessons.