Yes, an oven that is turned on but not actively used will still consume electricity. When you turn on an oven, it activates the heating elements, the oven light, and the control panel, which all draw power from the electrical supply. Even if you don't place any food inside or set a specific cooking temperature, the oven will continue to draw electricity to maintain the internal temperature and be ready for use.
The amount of electricity consumed by an idle oven will vary depending on the oven's make and model, its energy efficiency, and the duration it remains on without being used. While the power consumption may not be as high as when the oven is actively cooking, it's still advisable to turn off the oven when it's not in use to conserve energy and reduce electricity consumption. Many modern ovens come equipped with energy-saving features, such as auto-shutoff timers or "standby" modes, which can help reduce power usage during idle periods.