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This is a great example of where physics and our gut feelings about physics don't match up. This is a very common conceptional difficulty students have and is often jumped on by examiners. The best way to...

a) Use the equation P=IV where P is power in W, I is Current in Amps and V is voltage in volts. Rearrange to give I=P/V I=1000/230 = 4.34 A b) This is a wire connected to the metal casing of an electrical...

1. v=u+at Using a velocity time graph with constant acceleration, (graph provided as visual aid in tutorial) with initial velocity u and final velocity v, we can see that the graph is a straight line. ...

This is all down to how gravitational potential is defined. The gravitational potential at a point is defined as the work done per unit mass to move a mass from infinity to the point in the gravitational ...

The questions is constructed to show, that the order of devices do not affect the currents or voltages.

5ohm / ( 3 + 5)ohm = x/ 2V +5V     x = 35/8 V = 4 3/8V