Question

27. a) What is meant by electric current?

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b) Name and define its SI unit.

c) In a conductor electrons are flowing from B to A. What is the direction of conventional current?

d) Give justification for your answer.

e) Name the factors on which the resistance of a conducting wire depends.

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Answer 1

electric current is defined as a flow of electron in a conductor its SI unit is ampere

Answer 2

Answer:

a)Electric current is the rate of flow of electric charges

b)Si unit-Ampere

c)Direction of conv.current will be from A to B as electricity is the flow of positive charges

d)Electrons are negative charges but conv.current is the flow of positive charge so current will flow from a to bopp.to that of electronz

e)resistance of a wire

1. length
2. area
3. nature of material

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