Question

A 1.46 MΩ voltmeter is placed in parallel with an 80.0 kΩ resistor in a circuit.

(a) Draw a circuit diagram of the connection. (Submit a file with a maximum size of 1 MB.) This answer has not been graded yet.

(b) What is the resistance of the combination? (Enter your answer in ohms to at least 3 significant figures.) 74074 Correct: Your answer is correct. Ω

c) If the voltage across the combination is kept the same as it was across the 80.0 kΩ resistor alone, what is the percent increase in current?

(d) If the current through the combination is kept the same as it was through the 80.0 kΩ resistor alone, what is the percentage decrease in voltage?

(e) Are the changes found in parts (c) and (d) significant? Discuss.

Answer 1

(a) R 6) I - 1 1 80x103 RR 1.46X100 Rp 75844.16) R = 84104 C) Original resistance ..I v -02 8x104 (2) New, I = I = V 75844.16 % increase in Current - I - Io x 100 Iy 75844.16 8x104X100 x 184104 > (6.849x107x8x104)*100 15.48% VNew (d) Now To V 18x604) I New = To = 75844.16 1. decrease in voltage of 8 - New * 100 Vs

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