Which statement best describes resistance? Resistance is
2 answers:
Answer:
How well a material conducts an electrical charge and is measured in ohms.
Explanation:
Resistance is the property of a conductor which opposes the flow of electric current. Its SI unit is ohms and represented by . According to Ohm's law voltage is directly proportional to the current flowing through the circuit.
It depends directly on the length of the conductor and inversely on its area of cross section. It measure how well a material conducts an electrical charge. Hence, the correct option is (b).
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Hi there!
Recall the following relationships:
W = Work (J)
U = Potential Energy (J)
m = mass (kg)
g = acceleration due to gravity (9.8 m/s²)
h = height (m)
t = time (s)
Begin by calculating the work:
Now, divide by the time to solve for power:
**W is the unit for power (Watts). Be careful not to get the two confused.