Consider the sections of two circuits shown here. All resistors shown have a fin

Question

Consider the sections of two circuits shown here. All resistors shown have a finite, non-zero resistance. Select all that are true: After connecting c and d to a battery, the current through R_3 is always equal to the current through R_4. R_12 is always less than R_1 R_12 is the equivalent resistance after combining R_1 and R_2. R_34 is always less than R_3. R_34 is the equivalent resistance after combining R_3 and R_4. After connecting a and b to a battery, the voltage across R_1 is always equal to the voltage across R_2.

Explanation / Answer

1) After connetcting c and d to a battery the current through R3 is always equal to the current through R4. (TRUE)

=> Resistors are connected in series. so current is same for R3 and R4

2) R12 is always less than R1. (TRUE)

R12 = R1*R2/(R1 + R2)

so always R12 is less than R1 or R2.

3) R34 is always less than R3. (FALSE)

R34 = R3 + R4

so this can not be posible.

4) After connecting a and b to a battery the voltage across R1 is always equal to the voltage across R2. (TRUE)

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---