Science
Name and state the rule to determine the direction of a :
(a) magnetic field produced around a current carrying straight conductor.
(b) force experienced by a current carrying straight conductor placed in a magnetic field which is perpendicular to it.
Answer
(a) The rule used to determine the direction of the magnetic field around a current-carrying straight conductor is the Right-Hand Thumb Rule.
Right-Hand Thumb Rule : If you hold the current-carrying conductor in your right hand such that your thumb points in the direction of the current, then the curl of your fingers around the conductor gives the direction of the magnetic field lines.
(b) The rule used to determine the direction of the force experienced by a current-carrying conductor placed in a perpendicular magnetic field is Fleming’s Left-Hand Rule.
Fleming’s Left-Hand Rule : If you stretch the thumb, forefinger, and middle finger of your left hand mutually perpendicular to each other such that the forefinger points in the direction of the magnetic field and the middle finger points in the direction of current, then the thumb will point in the direction of the force (motion) of the conductor.
Related Questions
Define reflex action. With the help of a flow chart show the path of a reflex action such as sneezing.
Study the diagram given below and answer the questions that follow :
(a) Name the defect of vision represented in the diagram. Give reason for your answer.
(b) List two causes of this defect.
(c) With the help of a diagram show how this defect of vision is corrected.
Plants → Deer → Lion
In the given food chain, what will be the impact of removing all the organisms of second trophic level on the first and third trophic level? Will the impact be the same for the organisms of the third trophic level in the above food chain if they were present in a food web? Justify.A gas 'X' which is a deadly poison is found at the higher levels of atmosphere and performs an essential function.
Name the gas and write the function performed by this gas in the atmosphere. Which chemical is linked to the decrease in the level of this gas? What measures have been taken by an international organization to check the depletion of the layer containing this gas?