Current electricity questions | form six Physics

Justify the statement that ‘it is not possible to verify Ohm’s law by using a filament lamp’.

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UNSOLVED

A potential difference of 4V is connected to a uniform resistance wire of length 3.0m and
cross-sectional area 9×10​^-9​ , when a current of 0.2A is flowing in the wire. Find the;
(i) Resistivity of a wire.
(ii) Conductivity of a wire.

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UNSOLVED

Define the term junction as applied in electrical networks.

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UNSOLVED

What is the physical significance of Kirchhoff’s first law?

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UNSOLVED

Why is Kirchhoff’s second law sometimes referred to as the voltage law?

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UNSOLVED