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On the magnetic effect of current~ Electromagnet works by current effect, electric furnace is made by current effect, and charging battery by current effect 3q, ha~
1. Electromagnet works by using current magnetic effect,
2. The electric furnace is made into 0 according to the thermal effect of current,
3. The chemical effect of current is applied to charge the battery
Magnetic effect of current
Find the specific relationship between the magnetic field around the conductor and the direction of the current and the relevant laws
1
Right handed screw rule 1:
Hold the wire with your right hand and point your thumb to the direction of the current (so it must be direct current. The direction of the current flows from the positive pole to the negative pole in the wire). The direction pointed by the other four fingers is the direction of the magnetic line of force or the direction of the magnetic force on the N pole of the magnetic needle
two
Right handed screw rule 2:
Hold the coil with your right hand, four fingers point to the direction of the current on the wire, then the thumb is the direction of the magnetic line of force
The intensity of magnetic field is 1
H (Gauss) = 2I (ampere) / 10R (CM)
On the magnetic effect of current
Electric current can generate magnetism, so what factors are related to the size of the magnetic field?
First of all, we should correct the saying: "the size of the magnetic field" should be said to be "the strength of the magnetic field"
Current can generate magnetism. The factors that affect the strength of magnetic field are: current, coil turns, whether there is iron core in the coil, etc
The larger the current, the more the coil turns and the iron core, the stronger the magnetic field
What is the significance of the discovery of current magnetic effect?
Since then, electricity and magnetism have been related, and now the most widely used electromagnetic wave is actually the interaction of electric field and magnetic field
What makes use of the magnetic effect of current
Magnet attracts iron block B. compass guides direction C. simple telephone receiver D. electromagnetic crane
c,d
The magnetic effect of electric current is widely used in our daily life. What is it
More:
Motors, electromagnets, horns, etc
Definition of chemical energy and electric energy?
A device that converts chemical energy into electricity!
The definition of power and its relationship with speed
（1） Definition: the ratio of work done by a force to time used is called power. Mathematical expression w / T
What exactly do torque and power mean? What's the relationship,
Is torque the power of engine or power the power of engine
Power is the work done in a unit time, and torque is the force. For example, Party A and Party B each move 300 bricks to the third floor in an hour. Their time is one hour, and their work "things" is to move 300 bricks to the third floor, so the work done by Party a and Party B in a unit time is the same, that is to say
What does high specific power mean
I don't know if you mean the specific power of automobile. It is a comprehensive index to measure the dynamic performance of automobile. Specifically, it refers to the ratio of the maximum power of automobile engine to the total mass of automobile (see the corresponding explanation for the above two concepts)
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