A simple gaussmeter for measuring horizontal magnetic fields consists of a stiff 52 cm wire that hangs from a conducting pivot so that its free end makes contact with a pool of mercury in a dish below. The mercury provides an electrical contact without constraining the movement of the wire. The wire has a mass of 3 g and conducts a current downward. (a) What is the equilibrium angular displacement of the wire from vertical if the horizontal magnetic field is 0.04 T and the current is 0.20 A?

8.1345°

Explanation:

We apply to the wire to obtain:

#The magnitude of the magnetic force acting on the wire is given by:

#Substitute for to obtain:

Solve for :

We the substitute the numerical values to calculate the equilibrium angular displacement:

Hence, the equilibrium angular displacement of the wire from vertical if the horizontal magnetic field is 8.1345°

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in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..

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explanation: