[1] For example, a person carries implied authority when they are wearing a uniform or nametag bearing the logo or trademark of a business or organization, or when they are functioning in an authorized capacity on behalf of a business or organization.
An implied authority is authority that is not expressly granted by the contract, but that is assumed by the agent in order to have the ability to transact insurance business on behalf of the principal, regardless of what the contract specifically states.
Section 186 of the Indian Contract Act 1872 provides that an agent's authority may be express or implied.
Section 187 adds that "An authority is said to be express when it is given by words, spoken or written.
B has an implied authority from A to order goods in the name of A for the purpose of the shop.