Current Electricity - GCSE (defs and p.d. in circuits)

Unit of charge in SI unit is.....

• Coulomb C

• Resistivity ρ

• Ampere A

• Potential difference V

This is known as ohm's law.....

• V = I + R

• V = I ÷ R

• V = I - R

• V = I × R

Those substances which have very low resistance are called as.....

• Conductors

• Insulators

• Ametre

• Voltmetre

Those substances which have extremely high resistance are called as.....

• Ametre

• Insulator

• Conductors

• Current

The symbol used to express the current is......

• V

• I

• R

• C

What is the following component?

• dry cell
• fuse
• battery
• resistor

What is the following component?

• dry cell
• fuse
• resistor
• rheostat

What is the following component?

• fixed resistor
• rheostat
• fuse
• ammeter

What is resistance measured in?

• Ω (Ohms)
• V (Volts)
• A (Amps)
• W (Watts)

What is Resistance?

• The flow of electrons
• Electric potential difference
• A battery
• The ability to reduce the flow of electrons