What are the definitions of a)voltage and b)current?
a) Current is defined as the rate of flow of charge; I = Q/t (Current is charge/time).b) Voltage is an electromotive force which drives the charge around the circuit. A potential difference between two points on a circuit causes a flow of charge.
SC
Related Physics GCSE answers
All answers ▸What is the doppler effect?
Explain the difference between speed and velocity.
A rollercoaster carriage wants to go up a slope of length 10m at an angle of 30 degrees above the horizontal, at what speed must the carriage be travelling at the bottom of the slope in order for it to reach the top? (Negligable Drag)
A Car of mass 1000kg applies a constant 200N breaking force over a distance of 30m and comes to a complete stop. How fast was the car going the instant the brakes were engaged.