The resistance of a wire is not dependent on
2 answers:
Answer: D) current
Explanation:
Resistance is the opposing force to the motion of the charges which constitute current.
The resistance increases with increase in temperature and length of the wire but decreases with the diameter.
It does not depend on the current.
Resistance is given by:
where, ρ is the resistivity, l is the length of the wire, A is the area of cross-section and d is the diameter.
Other then these factors, the resistance increases with increase in temperature. This is because at higher temperature, the collision between electrons positive kernels increases which restricts the motion of electrons. This increases the resistance.
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Answer:
A. p(H) = 2.0506
B. p(H) = 7.0969
Explanation:
A.
p(H)= -log[H+]
p(H)= -log(8.9×10^-3)
p(H) = 2.0506
B.
p(H)= -log[H+]
p(H)= -log(8×10^-8)
p(H) = 7.0969
Check the circled atoms in the attached diagram
Explanation:
The circled options all belongs to the same elements. They are simply isotopes.
Since:
Red ball = protons
Yellow ball = neutron
Blue ball = electron
The protons are positively charged and with the neutrally charged neutrons they both occupy the vicinity of the nucleus of an atom.
Electrons moves round the nucleus in orbits.
Atoms of the same elements have the same number of protons.
The circled options all have two protons.
The atoms only differ in the number of neutrons which signifies that they are merely isotopes.
More descriptively, the atoms are Helium atoms.
learn more:
Isotope brainly.com/question/4551913
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