You can only unlock the chapter using a special code that we will send you via the Viber app. Receiving a message is free of charge and with no obligations.
My phone number:
Get a code
In compliance with the law, persons under the age of 15 can enter their phone number only in the presence of a parent or guardian.
4-character code:
Check the received code
The page will be refreshed automatically in a few seconds.
we sent you a message with a link. By clicking on the link, you will automatically log in to your profile.
Attention! The connection is valid for 15 minutes. The message is sent only if the user with the given username (e-mail address) exists in the database.
The graph of current against voltage for a 220 V bulb is given below. Can we calculate the resistance of the light bulb using the graph? How much is it? Why does the bulb usually burn out immediately after switching on?
The detailed solution steps are locked. Click on the blue button to unlock them.
The resistance of the bulb depends on the voltage on the bulb.
At a rated voltage of 220 V, the resistance is .
The bulb often burns out immediately after switching on because when the filament is still cold, its resistance is small, and therefore a large starting current flows.
To view the solution, you need to log in.
You must confirm your username (email address) to view the solution.
To ensure the proper functioning of the website, OpenProf uses cookies that do not store personal data. By continuing to use the website, you agree to cookies. Tell me more »
.
