Electric ovens typically do not automatically turn off after the timer ends. The timer on an electric oven is generally used to set a desired cooking duration or to remind you that a specific cooking time has elapsed. Once the timer goes off, it usually signals that the set time has passed, but it doesn't automatically shut off the oven.
In most cases, you would need to manually turn off the oven after the timer ends. This is an important safety feature because it ensures that the oven does not continue to operate unnecessarily, especially if you're not present to monitor the cooking process.
It's worth noting that some modern electric ovens may have advanced features or programmable settings that allow you to set a cooking time and have the oven automatically turn off once the timer expires. However, this functionality varies among different oven models, so it's essential to refer to the specific user manual or manufacturer instructions to understand the capabilities of your particular electric oven.