For the bulb, the plot of V vs I (with voltage on the y axis and current on the x axis) looks like:

The plot of Voltage (V) versus Current (I) for a bulb typically forms a curve. This is because a bulb does not obey Ohm's law (V=IR) perfectly due to its filament's temperature dependence on resistance.

Here are the steps to plot V vs I for a bulb:

1. Set up your experiment: Connect a bulb to a variable power supply. Also, connect an ammeter (in series) to measure the current and a voltmeter (in parallel) to measure the voltage across the bulb.

2. Start with a low voltage and gradually increase it. For each voltage value, measure the corresponding current flowing through the circuit.

3. Record these values in a table. Your table should have two columns: one for voltage (V) and one for current (I).

4. Plot these values on a graph. The x-axis should represent the current (I) and the y-axis should represent the voltage (V).

5. As you plot these points, you'll notice that they form a curve, not a straight line. This is because the resistance of the bulb increases with temperature, which in turn increases with current.

6. The curve typically starts at the origin (0,0) and as current increases, voltage also increases but not linearly. The curve steepens as the current increases due to the increasing resistance (and thus voltage drop) of the bulb.

Remember, this is a general case. The exact shape of the curve can vary depending on the specific bulb and its filament material.