Voting power is the number of votes a single share gives at the general meeting. Voting power is the basis for a share's voting rights.
Different share classes can have different voting power — an A share often gives ten votes and a B share one. This lets founders keep control even after a new share issue. The distribution is set out in the articles of association.

Voting rights are a shareholder's right to vote at the general meeting, often depending on share class.
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A B-share is a share class that usually carries lower voting power than the company's A-shares, often a tenth.
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Share class refers to different types of shares in a company, e.g. A and B shares, with different rights.
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The general meeting is the highest decision-making body in a limited company, where shareholders make decisions.
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