Q1. Answer the following : A) Tyrell measures the current through a resistor to
ID: 1865474 • Letter: Q
Question
Q1. Answer the following :
A) Tyrell measures the current through a resistor to be 0.30 A while the potential difference across the resistor is 6.0 V. What is the resistance of the resistor? Answer in units of ohms, ?.
B) Increasing the potential difference across a resistor will cause the current to
approach zero.
C) Laurie found that the slope of the best-fit line for her data had a value of 35.6 ?. She had used the multimeter to measure the resistance and found that it was 33.0 ?. What is the percent error in her results? Answer as a percent without the “%” symbol.
D) Tyrell knows that he has a resistor with a 200-? resistance. He wants to cause a current of 3.0 A to run through the resistor. What potential difference must he apply to the resistor to cause this to happen? Answer in units of volts, V.
F) Suppose that while performing this activity, Laurie begins to smell an odor that might be due to the resistor heating up. She should
increase.Explanation / Answer
A) Resistance, R = Voltage (V) / current (I) = 6/0.3 = 20 Ohm
B) As Ohm's law says, Voltage is directly proportional to current, so increase in voltage will increase the current.
C) % error = [ (35.6 - 33) / 35.6] X 100 = 7.30
D) From Ohm's law, V = I R = 3 x 200 = 600 V
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