The voltage across a resistor is found to be 1.5 V. It is also found that there is a charge of 2 Coulombs passing through the resistor within 10 seconds. What is the value of the resistor in ohms

R = 7.5 Ω

Explanation:

If the resistor is in the linear zone of operation, the resistance must obey Ohm's Law:

       

By definition, the current flowing through the resistor, is equal to the charge passing through the resistor, per unit time.So, we can write the following expression for the current I:

       

From (1) and (2) we can solve for R, as follows:

       

The value of the resistor is 7.5 Ω.

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.