Electromagnetism questions | form four Physics

Why is high voltage used for commercial transmission of electrical energy?

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UNSOLVED

What is electromagnetic induction?

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Fig 2 below shows two coils X and Y. X is connected to a battery and Y is connected to a centre galvanometer G.

(i) State and explain the deflection of the galvanometer needle when the switch K is closed for a few seconds and then opened.
(ii) Why must the galvanometer be a centre zero type?
(iii) What would be done in X to increase the current induced in circuit Y?

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State four characteristics of a highly sensitive galvanometer.

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What are eddy currents?

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