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Gaurav Seth 6 years, 3 months ago
Faraday’s laws of Induction
First law: -
- According to the first law an emf is induced in the circuit whenever the amount of magnetic flux linked with a circuit changes.
- Current was induced because of magnetic flux, as there is some current in the circuit therefore there will be some emf flowing in the circuit.
- Whenever the amount of magnetic flux linked with the circuit changes only at that time emf is induced.
- The induced emf will be there till there is change in the flux.
- When the magnet was moved then only there was change in the flux.
- As the magnet is moving the number of magnetic lines crossing the area is also changing.
- There is a change in the flux therefore there is induced emf.
- If the magnet is not moving, there will be no change in the amount of magnetic flux so there is no induced current.


Second law: -
- According to the second law the magnitude of the induced emf in a circuit is equal to the time rate of change of magnetic flux through the circuit.
- Emf which is induced will depend upon rate at which the magnetic flux is changing.
- Mathematically:-
- Let Φ1 = flux at initial time t=0.
- Φ2 = flux after time t.
- Rate of change of flux=(Φ2 – Φ1)/t =dΦ/dt
- According to Faraday’s law:-
- Induced emf e ∝ (dΦ/dt)
- Experimentally the constant of proportionality was found to be 1 in all cases.
- Therefore e=(dΦ/dt)
- Consider a coil which has N number of turns;Therefore
- e = N(dΦ/dt)
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You can easily get a different dessert if the price rises too high. If the quantity doesn't change much when the price does, that's called inelastic demand. An example of this is gasoline.
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Gaurav Seth 6 years, 3 months ago
The primary function of commercial banks is money creation in an economy. In the history of commercial banks, bankers know that the depositors would not be withdrawing all of their funds at a particular time.
This is why, they create credit in the form of much higher demand deposits than their cash reserves. Commercial banks issue loans on the basis of their demand deposits, even if only a fraction of the amount is with them as cash reserves.
In this way, they contribute to increasing the flow of money in an economy.
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Gaurav Seth 6 years, 3 months ago
Some sub-fields of human geography are:
• Behavioural Geography
• Geography of social well-being
• Geography of Leisure
• Cultural Geography
• Gender Geography
• Historical Geography
• Electoral Geography
• Military Geography
• Geography of Resources
• Geography of Agriculture, etc.
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