Which way does the wire in the diagram below tend to move?
The direction of the wire is to move in the upward direction by the virtue of Fleming's left hand rule.
PREVIOUSIn the simple electric motor of figure given below, the coil rotates anticlockwise as seen by the eye from the position X when current flows in the coil.Is the current flowing clockwise or anticlockwise around the coil when viewed from above?NEXTH the current in a wire is flowing in the vertically downward direction and a magnetic field is applied from west to east, what is the direction of force on the wire?
What will the polarity be one end of a solenoid if the current appears to be flowing anticlockwise in it?
All In One Science
The diagram shows a coil of wire wound on a soft iron core forming an electromagnet. A current is passed through the coil in the direction indicated by the arrows. Mark the N and S-poles produced in the iron core.
Explain with the help of a labelled diagram the distribution of magnetic field due to a current through a circular loop. Why is it that if a current carrying coil has n turns the field produced at any point is n times as large as that produced by a single turn?
NCERT - Science Exemplar
State and explain Fleming's right hand rule.
Meena draws magnetic field lines of field close to the axis of a current carrying circular loop. As she moves away from the center of the circular loop she observes that the lines keep on diverging. How will you explain her observation?
In the simple electric motor of figure given below, the coil rotates anticlockwise as seen by the eye from the position X when current flows in the coil.
Is the current flowing clockwise or anticlockwise around the coil when viewed from above?
The recent increase in crimes against people of the Northeast, especially in the cities, has highlighted the growing problem faced by the community. Fear of violence continues to worry them. Write a letter in 100-120 words to the Editor of The Times of India expressing your concern over the recent death of a young student resulting from a racial comment against people from Northeast. Suggest what steps the government should take to solve this problem. You are Aanchal/Aryan, a resident of A-12, East of Kailash, N. Delhi.
Hints: racial comments, attacks – rude behaviour, hurt feelings of our own fellow citizens – disharmony – dents the image of our country – steps to solve this problem.
Consider the following distribution of daily wages of 50 workers of a factory
Find the mean daily wages of the workers of the factory by using an appropriate method.
The following distribution shows the daily pocket allowance of children of a locality
The mean pocket allowance is Rs 18. Find the missing frequency f
You happened to notice a lot of garbage strewn in your locality. The inefficiency of the authorities in clearing the garbage on time has resulted in an unbearable stink. The people feel that this indifference is sure to spread diseases. Write a letter in about 100 �120 words to the editor of a newspaper on this problem and what you think can be done to curb this menace. You can take help from the unit on 'Environment' and the hints given below. You are Raju/Renuka, 251, Gitanjali Apartments, Delhi. 5
• Proper garbage dumping facility
• The civic sense in people
• Resident association to take charge
• Authorities to be alert
English (Comm) - Board Papers 1330 views
Prove the following identities, where the angles involved are acute angles for which the expressions are defined.
(v) using the identity
(viii)
(ix ) [Hint: Simplify LHS and RHS separately]
Find the LCM and HCF of the following pairs of integers and verify that LCM × HCF =
product of the two numbers.
(i) 26 and 91
(ii) 510 and 92
(iii) 336 and 54
To find out the concentration of SO2 in the air (in parts per million, i.e., ppm), the data was collected for 30 localities in a certain city and is presented below:
Find the mean concentration of SO2 in the air
Prove that is irrational.
Thirty women were examined in a hospital by a doctor and the number of heart beats per minute were recorded and summarised as follows. Find the mean heart beats per minute for these women, choosing a suitable method