What's the difference between Potential Difference and Electromotive Force
Although both are measured in volts, there is a subtle difference in their respective definition. Electromotive Force is the transfer of chemical energy in a battery (multiple single cells) into electrical energy per unit charge. Potential Difference is the transfer of electrical energy to other forms per unit charge, like kinetic in a motor or to hear in a heating element.
Both can be worked out numerically by computing V=W/Q
JJ
Related Physics A Level answers
All answers ▸If an alpha particle (Z = 2) of kinetic energy 7 MeV is incident on a gold nucleus (Z = 79), what is its closest distance of approach?
A car of mass M and a maximum power output of P is on an rough inclined plane Θ to the horizontal. What is the maximum velocity (v). Coefficient of friction=μ and air resistance=kv where k is constant
A pendulum of mass m is released from height h with a speed v at the bottom of its swing. a) What is the gravitational potential energy at height h and the kinetic energy at the bottom of its swing? b) Use conservation of energy to define the speed v.
I have trouble visualizing simple harmonic motion, and remembering all the related equations. How should I think about it?