Bright and warm colours like yellow and orange evoke positivity and energy as they resemble sunlight and warmth. On the contrary, dark colours like black or grey might create a dull or somber mood due to their association with darkness or sadness.
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.)