Aresistor is placed in a circuit. the voltage of the circuit is changed and the current is measured. the graph seen here shows the data that was collected. determine the resistance of the resistor in this circuit. a) 0.5 ohms b) 1 ohm c) 2 ohms d) 3 ohms

The answer is C. 2 Ohms

Explanation:

The slope of this graph is the resistance within the circuit. Ohm's law states that V=IR. When this is solved for resistance, R =

V

I

. The slope in any graph is defined as the

change in Y

change in X

. Picking the first and last point, change in Y is voltage and change in X is current. m =

Y

X

=

12 V

6 A

= R = 2 Ohms.

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.