The law(s) that is/are defined on the basis of principle of conservation of charge is/are:

The correct answer is option 3.

Kirchhoff's Current Law (KCL)

According to KCL, the algebraic current at a node is always zero.

ΣI = 0

\(-I_1-I_2-I_3+I_4+I_5=0\)

\(-{dq_1\over dt}-{dq_2\over dt}-{dq_3\over dt}+{dq_4\over dt}+{dq_5\over dt}=0\)

Hence, KCL is based on the conservation of charge principle.

Kirchhoff's Voltage Law (KVL)

According to KVL, the algebraic sum of the voltages in a closed loop is always zero.

ΣV = 0

\(-V_1+V_2+V_3+V_4=0\)

\(-{dW_1\over dq}+{dW_2\over dq}+{dW_3\over dq}+{dW_4\over dq}=0\)