Which type of change occurs when the bonds between atoms or molecules change and a new substance forms?
a: permanent
b: nuclear
c: chemical
d: physical

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

Does current flow through or across a resistor?

Which of the following best describes the circuit shown below?