5th Form - Electricity

A girl combs her hair and the comb becomes positively charged. This is because …

• electrons have moved from the comb to the hair
• electrons have moved from the hair to the comb
• protons have moved from the comb to the hair
• protons have moved from the hair to the comb

An induced charge means that …

• a charged object can attract a neutral object
• a neutral object can attract a neutral object
• a neutral object can attract a charged object

If the distance between two charged objects increases the force between the objects …

• decreases
• increases
• remains the same

What is the unit for charge?

• coulomb
• amp
• ohm
• volt

What is the correct equation for calculating charge?

• current × time
• current ∕ time
• time ∕ current

What is the correct equation for calculating current?

• charge ∕ time
• time ∕ charge
• charge × time

What is the correct equation for calculating time?

• charge ∕ current
• current ∕ charge
• charge × current

What is the correct equation linking charge, current and time?

• charge = current × time
• current = time ∕ charge
• time = current ∕ charge

What is the correct equation linking charge, current and time?

• current = charge ∕ time
• time = charge × current
• charge = time ∕ current

What is the correct equation linking charge, current and time?

• time = charge ∕ current
• charge = current ∕ time
• current = charge × time