Activity 13.4 n Take a long …

Activity 13.4 n Take a long straight copper wire, two or three cells of 1.5 V each, and a plug key. Connect all of them in series as shown in Fig. 13.5 (a). n Place the straight wire parallel to and over a compass needle. n Plug the key in the circuit. n Observe the direction of deflection of the north pole of the needle. If the current flows from north to south, as shown in Fig. 13.5 (a), the north pole of the compass needle would move towards the east. n Replace the cell connections in the circuit as shown in Fig. 13.5 (b). This would result in the change of the direction of current through the copper wire, that is, from south to north. n Observe the change in the direction of deflection of the needle. You will see that now the needle moves in opposite direction, that is, towards the west [Fig. 13.5 (b)]. It means that the direction of magnetic field produced by the electric current is also reversed.

Obtain the relation between incidence angle, emergence angle, prism angle and deviation angle for refraction through prism How to derive this

Explain three stages of resource planning

What is the function of petal and sepal.

How do organisms obtain their nutrition?

What is the importance of variation explain in 4 to 5 points

How does our body respond when adrenaline is Secreated into the blood

Digestion is begin from in the presence in which enzymes or digestion occur

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

• Don't post personal information, mobile numbers and other details.
• Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
• Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
• Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

What effect does the concentration of H+(aq) ions have on the nature of the solution

A current of 5 mili mpr is passing through a wire how many electrons are passing through per minute through the area of cross section of the wire