If the same energy were used in opening the switch, and the switch went through

Question

If the same energy were used in opening the switch, and the switch went through 5000 cycles each second, what is the average power lost in the switch? Each cycle involves opening and closing the switch. Problems based upon circuit symmetry. The equivalent resistances in Fig. PI.50 may be solved readily using circuit symmetry. For example, in circuit the circuit has even symmetry about the center line of the bridge; hence, any current that enters at the top divides equally. Consequent]), the voltage across the middle resistance is zero, no current passes through it. and the left and right resistances are actually in series (have the same current). Using this approach. find the indicated equivalent resistance for all three circuits. These problems are based upon infinite

Explanation / Answer

a)

Req =(R||R)||(R||R)|R

R||R=R*R/(R+R) =R/2

Req =(R/2)||(R/2)||R

(R/2)||(R/2) =(R/2)(R/2)/(R/2+R/2) =R/4

Req =(R/4)||R

Req=(R/4)*R/(R/4+R)

Req =-R/5

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.