Y11 GCSE Topics 1 and 2

What is the formula for Kinetic Energy?

• E_k=1/2mv²

• E_k=2mv²

• E_k=1/2mv³

• E_k=2mv³

Gravitational potential energy is stored when an object is …

• heated

• stretched

• lifted

• accelerated

Kinetic energy can be calculated using the equation E_k= ½ mv²

In this equation 'v' is …

• velocity

• energy

• mass

• weight

Which unit is energy measured in?

• kilograms

• watts

• joules

• newtons

The law of conservation of energy states that …

• energy is always constant

• energy cannot be transferred or created, only destroyed

• energy cannot be created or destroyed, only transferred

• energy cannot be transferred, only created and destroyed

In what unit is charge measured?

• Volts

• Amps

• Quarks

• Coulombs

What unit is used to measure voltage (or potential difference)?

• Amps (A)

• Volts (V)

• Coulombs (C)

• Joules (J)

As a filament bulb gets brighter, what happens to its resistance?

• The resistance decreases

• The resistance stays the same

• The resistance increases

• The resistance becomes zero

A car headlamp is rated as 12 V, 2 A.

What is its power rating?

• 12 W

• 14 W

• 24 W

• 122 W

The correct form of Ohm's Law, linking potential difference V, current I and resistance R is…

• V = I × R

• V = I + R

• V = I/R

• V = R/I