1. The current through a 475-k resitr=or is 9.71 uA. What is the voltage differe

Question

1. The current through a 475-k resitr=or is 9.71 uA. What is the voltage difference across the resistor?

a) 4.61 V

b) 48.9 V

c) 0.0204 V

d) As the location of ground is unkown, this questions can not be solved.

2. A uniform electric field with a strength of 938 N/C extends over a distance of 52.1 cm from left to right. What is the change in voltage when moving from left to right?

a) +1800 V b)+489 V c) -1800 V d) -489 V

3. A particular copper wire has a length of 92.5 cm and a radius of 0.115 mm. If copper has a resistivity of 1.68 * 10^-8 *m, what is the resistance of the wire?

a) 0.374

b) 4.30 * 10^-5

c) 7.55 * 10^-16

d) 7.19 * 10^-13

4. A -7.18-uC charge with a mass of 5.30 mg passes through a voltage difference of -533 V. At the end of this, the speed of this object has a speed of 53.9 m/s. What was its initial speed?

a) 66.4 m/s b) 37.5 m/s c) 43.5 m/s d)102 m/s

Explanation / Answer

According to the chegg guidelines I am allowed to answer only 1 question at a time .

1) R = 475 * 10 ^ 3 ohms I = 9.71 * 10 ^ -6 A

V =IR = 9.71 * 10 ^ -6 A * 475 * 10 ^ 3 ohms = 4.61225 Volts =========ANSWER) OPTION A)

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