Home › AP Intermediate 2nd Year › Current Electricity › According to Kirchhoff's Voltage Law, the algebr…
According to Kirchhoff's Voltage Law, the algebraic sum of all potential differences around a closed loop is
Aequal to the total current in the loop
Balways positive
Czero
Dequal to the resistance of the loop
Answer & Solution
Correct answer: C. zero
Kirchhoff's Voltage Law states that the algebraic sum of all emfs and voltage drops around any closed loop is zero. This expresses conservation of energy in circuits.
Related questions
For a battery of emf ε and internal resistance r driving current I through external resistA galvanometer of resistance G is converted into a voltmeter reading full-scale voltage V A galvanometer of resistance G shows full-scale deflection at current I_g. To convert it iThe relation between current density j, drift velocity v_d, number density n and charge e A wire has a resistance R. It is stretched uniformly so that its length becomes 2L. The neKirchhoff current law at a junction is a statement ofTwo cells of emf ε and internal resistance r each are connected in parallel. The equivalenA potentiometer of length L is used to compare emfs. If the balance lengths for cells of e