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What rule should you use in order to determine the direction of induced EMF in a coil?
The direction of an induced voltage is such that it always acts to oppose any change of current which causes it.So, for example, during the first quarter-cycle of a sine wave, when the current is increasing, the induced voltage acts oppose that change (increase) -in other words, it acts in the opposite direction to that current. During the second quarter-cycle of a sine wave, when the current is decreasing, the induced voltage again acts opposethat decrease that change (decrease) -in other words, it acts in the same direction to that current -trying to sustain that current.
What else can I help you with?
When can voltage be induced but not current?
"Induced" is the verb you are looking for. A current is induced in the secondary circuit by the current in the first changing, provided both conductors are close enough for the driving current's electro-magnetic field to enclose the second conductor. Note that word "changing". Direct current produces a field but that remains constant and does not induce a secondary current, as a.c. does.
What has to be interchange in order to reverse the direction of rotation of shunt generator?
the direction of the rotation of dc shunt generator could be changed only by changing the direction of rotation of the prime mover
Why sampling needed?
Sampling is needed in order to determine the properties of a distribution or a population. Sampling allows the scientist to determine the variance in an estimate.
What does a commutater in an electric motor do?
It (1) provides a means of connecting a rotating coil to the external circuit, and (2) it is a rotating switch which ensures that the direction of the current through the coil always acts in the same direction relative to the magnetic field in order to ensure its torque acts in the same direction.
What genetic uses advanced technology to actually maniuplate genes in order to determine the effects on behavior?
Molecular
What is paleomagnitism?
Paleomagnetism is the study of rock magnetism in order to determine the intensity and direction of Earth's magnetic field in the past.
Is n plus 1 less than 4?
you determine the answer of this by figuring out when this is true. Is it true when N equals 4? when n equals 0? You should be able to find the number when it changes from true to not true, and you should be able to determine in which direction it will continue to be true. you should end with n is less than or equal to a number in order for this statement to be true.
What must be applied to a objects in order change the objects motion or direction?
A force must be applied to an object in order to change its motion or direction. This force can be in the form of a push or pull exerted on the object. The magnitude and direction of the force applied will determine how the object's motion changes.
What to do in order not to through up after drinking alcohol?
Induced vomiting
What type of a test charge is used by scientists in order to determine the direction of the electric field vector?
Scientists use a positive test charge to determine the direction of the electric field vector. The electric field direction is defined as the direction in which a positive test charge would move when placed in the field. Thus, observing the force experienced by the positive test charge allows scientists to infer the direction of the electric field at that point.
What two things do you need to know in order determine the amount of work you do?
You need to know the force applied and the distance over which the force is applied in order to determine the amount of work done. Work is calculated as the product of force and displacement in the direction of the force.
Should vehicles at a 4-way stop intersection proceed in a clockwise or counterclockwise direction"?
Vehicles at a 4-way stop intersection should proceed in the order they arrived, regardless of direction.
How can you determine where a money order originated?
The issuing bank is always printed on the money order. There should be no problem determining where it originated.
After you look at the poetic devices in a poem, what should you do next in order to analyze the poem?
Determine the tone
After you look at the poetic devices in a poem,what should you do next in order to analyze the poem?
Determine the tone
What must be changed in order to change the motion of an object?
To change the motion of an object, one must apply a force to it. The magnitude and direction of the force will determine how the motion changes. More force will cause a greater change in motion, and changing the direction of the force will also change the direction of motion.
What changes the flow of electrons in an alternating current?
first of all the voltage doesn't change what changes is the current direction the way they do it is by using magnet . electrons tend to escape from the magnetic field . you can find on you tube how a motor works for better idea.
