Explain how does Ad rank impact Cost-Per-Click
 

Ad rank plays a huge role in defining the actual cost-per-click that your opponents pay, when someone clicks on their ads. Your CPC can be calculated by following way

Ad rank is a value that's determined your ad position. Ad Rank is calculated using your bid amount, the components of Quality Score (expected clickthrough rate, ad relevance, and landing page experience), and the expected impact of extensions and other ad formats.