K.C.S.E Physics Q & A - MODEL 2007PP2QN15
(a) State Ohm's Law
(b) The graph in figure 9 shows the current – voltage characteristics of a certain device, X
(i) State with a reason whether the device obeys Ohm's law
(ii) Determine the resistance of the device, X, when the current through it is 60 mA.
(iii) When the device, X is connected in the circuit below, the voltage across it is 0.70 V.
Calculate the value of the resistance R.
(c) The cell in figure 10 has an e.m.f of 2.1 V and negligible internal resistance.
(i) Total resistance in the circuit
(ii) Current in the circuit
(iii) Reading of the voltmeter
FORM I - PHYSICS SYLLABUS
FORM II - PHYSICS SYLLABUS
FORM III - PHYSICS SYLLABUS
FORM IV - PHYSICS SYLLABUS
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