po QUESTION 1 Electnc current in a conducting wire is given by 1 neAY n is the n

Question

po QUESTION 1 Electnc current in a conducting wire is given by 1 neAY n is the number of electrons per unit v inside the wire, e is the elementary charge of an electron, A is the cross-sectional area of the wire the drift velocity of the electrons in the wire. Which of these factors has the biggest effect on the c which of these factors is the biggest magnitude number? o n-the number of electrons inside a conducting wire is really big o e-the elementary charge of an electron is really big A-the cross-sectional area of a conducting wre is realy large e v-the deift velocity of the electrons in the wire is really fast QUESTION 2 1 points Three resistors. R1, R2, and R3. are connected in series whattrue about ther effecte resistance. Reff is smaler than all three indnidual resistors Refis somewhere in the middle-bigger than some of the nd idual res stors but smaller than the oth Reff is bigger than all three individual resistors Ref is e to the QUESTION 3 | Question Completion Status Tro resistors, R1 and R2, are coneacted in paralel R2 has more sesistance than Rt. b Rs current than R2 What is true about V1 and V2, the potential differences across Rt and R2? e V1 and V2 are equal o V1 is greater than V2 because R1 has more current than R2 o V2 is greater than V1 because R2 has more resistance than R1 o Nothing can be determined about V'1 and V2 with the gien inormation QUESTION 4 Examine the circut shown here with the cument drections indicated by the u whether the petertis onerences br resistor 2. tesstor 3. and battery 2 a shown here wth tha current deedom rdcated by the blue-Forteicha se-…of.) F.)C. For added or subc RI = 4.0 R2 = 6.0 R3 = 3.0 R2 R3 81 1.5V E2 = 3.0 V Resistor Ts added

Explanation / Answer

Question 1.

I = n * e * A * v

Ans : n - the number of electrons inside a conducting wire is really big.

Question 2.

R1, R2, R3, connected in series.

Reff = R1 + R2 + R3

Ans : Reff is bigger than all three individual resistors.

Question 3.

Two resistors R1 and R2 are connected in parallel. R2 > R1 but I2 < I1.

Ans : V1 and V2 are equal.

Question 4.

Ans : Resistor R3 is subtracted.

Reason, current flows from positive end of the battery to the negative end. Current through R2 is in the direction of current due to battery but current through R3 is in the opposite direction.

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