Which part of the human brain is responsible for:
(a) thinking
(b) picking up a pencil
(c) controlling blood pressure
(d) controlling hunger
(a) Thinking: The cerebrum is responsible for thinking, reasoning, and decision-making.
(b) Picking up a pencil: The motor cortex, located in the cerebrum, controls voluntary movements like picking up a pencil.
(c) Controlling blood pressure: The medulla oblongata controls autonomic functions like blood pressure.
(d) Controlling hunger: The hypothalamus is responsible for controlling hunger and other homeostatic functions.
Draw the pattern of the magnetic field lines for the two parallel straight conductors carrying current of same magnitude 'I' in opposite directions as shown. Show the direction of magnetic field at a point O which is equidistant from the two conductors. (Consider that the conductors are inserted normal to the plane of a rectangular cardboard.)