Final answer:
If your drive chain breaks while riding a bike, you will notice a loss of power to the rear wheel and should not continue riding. It is important to fix the chain as soon as possible to avoid further damage or injury.
Step-by-step explanation:
When a drive chain breaks while riding a bike, you will notice a loss of power to the rear wheel. This happens because the chain is responsible for transferring the force from your legs to the wheel, allowing it to move. So, if the chain breaks, the force cannot be transmitted effectively and you will experience a decrease in power.
In such a situation, you should not hold the chain in place, as it won't be useful. Instead, you should stop riding and fix the chain as soon as possible. Riding with a broken chain can be dangerous and may cause further damage to your bike or yourself.