A current of 12 A flows for 20 minutes into an electric cooker. How much charge has the cooker used?
1 answer:
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Answer: The answer is in the figure attached.
Explanation:
The Work done by a Force
refers to the release of potential energy from a body that is moved by the application of that force to overcome a resistance along a path.
It should be noted that it is a scalar magnitude, and its unit in the <u>International System of Units</u> is the Joule (J). Therefore, 1 Joule is the work done by a force of 1 Newton when moving an object, in the direction of the force, along 1 meter:
However, in the British Engineering and Gravitational Systems its unit is Foot-pound (ft-lb). Where
Now, when the applied force is constant and the direction of the force and the direction of the movement (traveled distance)
are parallel, the equation to calculate it is:
So, taking into account the explanation above, the attached table shows the Work done for each situation.
The magnitude of the electric field at the dot is : 10⁴ v/m
<h3>What is electric field?</h3>
Electric field is a region around a charged particle or object within which a force would be exerted on other charged particles or objects.
Given that there are three equipotential lines with equal spacing,we will apply the the relationship between P.D and electric field
Determine the magnitude of the electric field at the dot
change in voltage = E .d
From equation ( 1 )
The magnitude of electric field will be given as
Hence we can conclude that The magnitude of the electric field at the dot is : 10⁴ v/m
Learn more about electric field :
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Answer:
a) , b) From east to west.
Explanation:
Vectorially, the magnetic force can be calculed by the following formula:
The cross product is:
a) The magnitude of the magnetic force is:
b) The direction of the magnetic force is:
From east to west.