1. Which of the following is Kirchhoff\'s Junction Rule? a) Adding up all curren

ID: 1530008 • Letter: 1

Question

1. Which of the following is Kirchhoff's Junction Rule?

a) Adding up all currents heading into a junction should be equal to all currents heading out of the junction.

b)The potential difference from one junction to another is a constant.

c) All voltages at each junction are the same throughout a circuit.

d) The resistance at each junction is zero.

2. How should a voltmeter be placed in a circuit?

a) Voltmeters only work on the battery (or other source) as that is where the voltage is.

b) In series with the portion of the circuit being measured

c) In parallel with the portion of the circuit being measured

3. Which of the following is the expression used to calculate the time constant in an RC circuit?

A) = R/C

B) = C/R

C) = 1/(RC)

D) = RC

Ans :- a) Adding up all currents heading into a junction should be equal to all currents heading out of the junction.

Explanation :- Kirchhoff's junction rule is an application of the principle of conservation of electric charge: current

is flow of charge per time, and if current is constant, that which flows into a point in a circuit must equal that which

flows out of it.

Ans c) In parallel with the portion of the circuit being measured.

Ans d) = RC

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