There are three general reasons for bail to be denied: that you might abscond (i.e. not turn up for your next hearing); that you may commit further crimes; that you may interfere with the course of justice (in particular witnesses). Bail with conditions may be used to offset these fears. An electronic tag is usually used to enforce a curfew (which itself is usually enforced to prevent the commission of further crimes). However, the court may well have a reason for believing that a tag may help ensure your attendance at court.
If you have a bail condition to reside at a certain address and the address quoted is not yours you need to get to the court asap to sort it out. Even if the form is incorrect, if you do not reside at the address stated you are, strictly speaking, in breach of your bail conditions. When you are given a bail notice with conditions you are asked to sign it to say you understand those conditions. Whilst you are at court you can make an application for the tag to be removed but it is entirey at the discretion of the court.