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Physics
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How do you work out the direction and strength of the force on a current carrying wire in a magnetic field?

The magnitude of the force is given by F = BILsin(θ) . I is the current flowing through the wire, L is the length of the wire in the magnetic field and B is the magnetic field strength. The angle θ, is th...

Answered by Adam P. Physics tutor
2220 Views

Can you explain the different ways heat can travel?

Heat can travel through 3 different processes: conduction, convection and radiation. Conduction is caused by atoms bumping into each other, transferring energy and therefore heat. An example of this would...

Answered by Jake G. Physics tutor
2413 Views

State similarity and difference between the electric field lines and the gravitational field lines around an isolated positively charged metal sphere.

The lines are radial and as distance increases from the sphere the further away the lines get from each other in both.
The differences are that gravitational lines are directed towards the sphere an...

Answered by Trishi S. Physics tutor
5402 Views

What is meant by the conservation of energy?

Energy cannot be destroyed or created - it is always transferred between different objects in different forms. Hence, energy is 'conserved'. The most basic example is dropping a stationary rubber ball fro...

Answered by Jonathan H. Physics tutor
3208 Views

Explain the difference between current and voltage

Current is defined as the amount of electrons that flow through a wire per secondVoltage is defined as the amount of energy that each electron carries as it passes throug...

Answered by Harout K. Physics tutor
1932 Views

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