when current is reversed in the direction the force due to magnetic field is also reversed
As we know that the formula of force will be given as
so here if the direction of current is reversed the the force vector also reverse its direction
So we will have the direction of force is also reverse and it will move downwards now
answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.
energy released during combustion of one mole methane = 802.3 kilo joules
if 1 kilo joule = 0.239006 kilo calorie
then ,802.3 kilo joule will be = 802.30.239006 kilo calorie
802.3 kilo joule = 191.75 kilo calorie
hence, the energy in kilo calorie is 191.75 kilo calorie.
.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue