Potential Difference

Voltage is measured in __.

• volts.
• watts.
• coulombs. 

What is the energy given off by a 20V bulb which has 10C passing through it?

• 200J

• 2J

• 0.5J

• 250J

When lighting happen,25 C charge is transferred from could to the ground and 1.25x10¹⁰ J energy is produced. Calculate the potential difference within cloud and the ground in unit Volt

• 4.00 x 10⁸

• 2.00 x 10⁸

• 3.00 x 10⁸

• 5.00 x 10⁸

How must a voltmeter be connected?

• In series

• In parallel

• To a power supply

What is 1 volt equivalent to?

• 1J/C

• 1C/J

• 1A/s

• 1J/V

Define potential difference

• The amount of energy per charge

• The amount of charge per energy

• The amount of charge per second

• The amount of voltage per second

Calculate the potential difference if the work done by 10 coulombs of charge is 50 joules

• 500 V

• 5 V

• 0.5 V

What is the correct equation?

• potential difference = charge / time taken

• potential difference = work done / charge

• potential difference = work done / time taken

• potential difference = time taken / charge

work done = energy transferred

• true

• false