A-Level Physics Specification

OCR A H556

Section 4.2.3: Resistance

Are you studying this syllabus?

You can track your progress by adding it to your account.

Add syllabus

#4.2.3a

resistance; \(R = \dfrac{V}{I} \); the unit ohm

Learners will also be expected to recall this equation.

#4.2.3b

Ohm’s law

#4.2.3c

(i) I–V characteristics of resistor, filament lamp, thermistor, diode and light-emitting diode (LED)

(ii) techniques and procedures used to investigate the electrical characteristics for a range of ohmic and non-ohmic components.

PAG3

#4.2.3d

light-dependent resistor (LDR); variation of resistance with light intensity.