Which is(are) true? Kirchhoff\'s second rule a. relates the sum of the emfs arou

Question

Which is(are) true? Kirchhoff's second rule a. relates the sum of the emfs around a closed loop in a circuit to the potential b. changes across all resistors and circuit elements c. implies conservation of energy in electric circuits. d. relates the currents entering and leaving any branch point in a circuit. e. all of the above f. two of the above g. none of the above The Hall effect a. provides empirical evidence that the charge carriers in metals are negative. b. can be used to determine the density of free electrons in a metal. c. both of the above d. neither of the above A resistor and an initially uncharged capacitor arranged in series are charged by a battery, which is connected at t = 0. The current in the circuit a. is constant because the emf supplied by the battery is constant. b. decreases exponentially in time. c. increases exponentially in time. d. There is no current because the electrons cannot flow through the gap in the capacitor Which statement(s) is(are) true? Ohm's law a. asserts that the current in a conducting wire is proportional to the resistance of the wire. b. is a general law of nature like Newton's laws and Gauss' law. e. describes the electrical properties of some conducting materials. d. all of the above e. two of the above

Explanation / Answer

1)

Answer is option f

Because option d is belongs to 1st law.

First 3 options are right. There is no option as above 3 are right.

This law is also called Kirchhoff's second law, Kirchhoff's loop (or mesh) rule, and Kirchhoff's second rule.

(i) The principle of conservation of energy implies that

The directed sum of the electrical potential differences (voltage) around any closed network is zero, or:More simply, the sum of the emfs in any closed loop is equivalent to the sum of the potential drops in that loop, or:

The algebraic sum of the products of the resistances of the conductors and the currents in them in a closed loop is equal to the total emf available in that loop.

2)

Answer is option C

3)

Answer is option C

Because current increses upto capacitor fully charges

4)

Answer is option b and c

ohm's law is current is proportional to volatge

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

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