Current electricity questions | form three Physics

List four factors that affect the resistance of a conductor.

Answer / Solution

UNSOLVED

Study the circuit diagram in Figure 3, then answer the questions that follow:

If the current flowing in 5 Ω resistor is 2 A, calculate the
(i) Current flowing in the 10 Ω resistor.
(ii) Potential difference (p.d.) across the 20 Ω resistor.

Answer / Solution

UNSOLVED

Two cells each with an e.m.f. of 1.5 V and internal resistance of 2Ω are connected in (a) series (b) parallel. Find the current in each case when the cells are connected to 1Ω resistor.

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UNSOLVED

Draw an electric circuit showing proper arrangement of ammeter (A), voltmeter (V), battery of two cells, a fixed resistor (R), and an open switch (S). Show the direction of flow of current (I).

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UNSOLVED

Calculate the amount of voltage required to drive a current of 2A through a resistor of 20Ω.

Answer / Solution

UNSOLVED