Consider the circuit pictured on the right. It contains a power source and three 9V light globes.

The circuit pictured on the right is a series circuit parallel circuit

The power source provides a voltage of 9V. Each light globe glows with maximum brightness less than haif of its maximum brightness

The voltage across one of the lamps is measure with a volmeter. Its reading was 9V 3V 1V 6v

The circuit pictured on the right contains 4 light globes connected to a power source

If each light globe is 6 V, what should the minimum voltage provided by the power source be so that each light globe glows with maximum brightness? 24 V 9 V 27 V 36 V

A 9 V light globe is connected, together with a number of other identical light globes, to a 36 V power source. A voltmeter measures the voltage across this light globe at 4.5 V.

How many light globes are connected? 1 2 3 5 8 more than 8 light globes
What type of circuit is this? series parallel

What should the voltage of the power source be in order for all light globes to glow with maximum brightness? 35 V 72 V 36 V 9 V 80 V

The voltage across a lamp is measured with a voltmeter. Two more identical lamps are added and the voltage across the same lamp measured again. What is the voltage across the lamp? 2 V 4 V 3 V 9 V

Solution