Electrical currents and energy transfer

Question 1

when an electrical appliance is turned on, electrons are what

Answer 1

forced through it by the potential difference of its power supply unit

Question 2

the potential difference causes what

Answer 2

charge to flow through the appliance carried by the electrons

Question 3

when a resistor is connected to a battery work is done to the battery to make what

Answer 3

electrons pass through the resistor

Question 4

each electron repeatedly collides with what, so the ions what meaning what

Answer 4

• vibrating metal ions of the resistor transferring energy to the ion
• so the ions of the resistor gain kinetic energy and vibrate even more
• the resistor becomes hotter

Question 5

the electrical work done by the battery is equal to what

Answer 5

energy transferred by the resistor

Question 6

in this way energy is transferred from the chemical energy store in the battery to what

Answer 6

to the resistors store. of thermal energy

Question 7

when charge flows around a circuit for a given time, the energy supplied by the battery is equal to what

Answer 7

the energy transferred to all components in the circuit