Describe how the student could use her circuit to investigate how the currentthrough a filament lamp affects its resistance

A student investigates the resistance of a lamp. The student uses a circuit that contains an ammeter, a battery, a lamp and a voltmeter to determine the resistance of the lamp. Draw a circuit diagram to show how he should connect the apparatus.

Students are modelling the effect of the resistance of electrical cables, C, on the transmission of electrical power. Their circuit is set up as the following: Describe the effects of introducing a second resistor at point C on the brightness of the light bulb, B, with reference to power.

Design an experiment to investigate how the length of a wire affects the brightness of a light bulb in a simple circuit.Your response must include:Material with quantityStepwise methodologySafety precautionsB

Based on our analysis of the circuit, create an equation for the current that runs through a light bulb.

Use the correct answer from the box to complete each sentence.a filament bulb an LED an LDRAn electrical component which has a resistance that increases as thetemperature increases is .................................................. .An electrical component which emits light only when a current flows through itin the forward direction is ..................................................