Whirlpool’s 279838 dryer element has become the most popular dryer element we sell. You should be able to tell if it’s bad with a meter (checking for continuity) or by looking for a burned out spot. Usually the element wire actually breaks in two when it goes bad. The 279838 element is 240 Volts and 5400 Watts with 5/16″ terminals.
Link to 279838 element for sale.
If you are adventurous… there is also a restring kit available for this element (the wire only). The part number on it is 279838C.