Two resistors of 12\Omega and 18\Omega are connected in parallel. This combination is connected in series to another parallel combination of 4\Omega , 6\Omega , and 8\Omega . a. Find the total resistance of the whole combination. b. If the current through the whole combination is 6 A, find the current in each resistor.

A geological core sample is taken at a coal mine.   The sample is a cylinder 20.7 feet long and 5.25 inches in diameter. The geologists run electric current through the sample to find its resistivity, which can be used to determine the quality of the coal. A voltage of 5030 V (5.03 × 103 V) is found to produce 11.4 mA of current through the sample. a. What is the resistance in the coal sample? b. What is the resistivity of the sample?

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Consider the following circuit diagram. The potential difference across the battery is 40.0 volts, and it supplies a current of 5.00 amperes to the circuit. There is a current of of 2.70 amperes flowing through R1. Resistor R2 has a resistance of 5.50 ohms. What is the resistance of R3? Answer in ohms to two decimal places, but do not include units in your answer.

A resistor of unknown resistance is in series with a 20.00 resistor. A battery of emf 6.0V and negligible internal resistance is connected across the combination. The battery provides a current of 0.80 A. What is the unknown resistance? O a. 15 Q O b. 50 O c. 10Q O d. 12 Q

A steel wire, of length L and diameter D, has a resistance of 100 . What current would flow through a silver wire of the same diameter and the same length if a 13.0 V potential difference were applied across its length? Express your answer in amperes. I = ΠΫΠΙ ΑΣΦ ! You have already submitted this an No credit lost. Try again. Submit ? Previous Answers Request Answer A Enter a new answer.

A 9V battery is connected to a bulb with a resistance of 60ohms and resistor with a resistance of 50ohms in series. i. What is the total resistance of the circuit? ii. Compute for the current flowing in the circuit. i. If the resistor and bulb are connected in parallel, compute for the total current.

A circuit consists of a battery connected to three resistors (70 N, 30 N, and 170 2 ) in parallel. The total current through the resistors is 2.9 A Part A Find the emf of the battery. Express your answer using two significant figures. Πν ΑΣφ E = V Submit Request Answer Part B Find the current through 70 N resistor. Express your answer using two significant figures. ? I = A

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Using Kirchhoff's rules, find the following. (E, = 70.8 V, E, = 62.0 V, and & = 78.8 V.) b. 4.00 kN d E E, E. R3 R2 3.00 kN 2.00 kN a R1 (a) the current in each resistor shown in the figure above mA IR3 mA (b) the potential difference between points c and f magnitude of potential difference V point at higher potential Select-- v