A variable voltage supply was connected in a series circuit with a 10 ohm resistor and an incandescent bulb.
Assume that the incandenscent bulb has a linear relationship between its measured voltage and current (i.e. Ohm's Law: V=IR).
Table: Measured current and voltage across a light bulb.
Voltage (V): 1 ; 3.5 ; 5.6 ; 7.2 ; 9 ; 10.5
Current (mA): 60 ; 275 ; 450 ; 550 ; 640 ; 820
1. Draw a graph to represent this data. Calculate the slope of this graph, and use this value to determine the resistance of the globe.
2. Describe an alternative method (that doesn't use a graph) to analyse the measured voltage and current data to determine the resistance of the globe. Use this method and compare its result to the value calculated using the graph technique.
3. The globe has a maximum allowable voltage of 12V. The variable voltage is adjusted so that 12V is measured across the globe. Predict and briefly justify what the corresponding current measurement would be.
1
Expert's answer
2011-04-07T07:51:47-0400
Unfortunately, your question requires more work than to be done for free. You can submit it as an assignment to our control panel set the deadline and our programmers will assist you.
Numbers and figures are an essential part of our world, necessary for almost everything we do every day. As important…
APPROVED BY CLIENTS
"assignmentexpert.com" is professional group of people in Math subjects! They did assignments in very high level of mathematical modelling in the best quality. Thanks a lot
Comments
Leave a comment