Kirchoff's voltage law and current law are respectively in accordance with the conservation of (a) charge and momentum (b) charge and energy (c) energy and charge (d) energy and momentum

Q. The first law of thermodynamics is a statement of
(a) conservation of heat
(b) conservation of work
(c) conservation of momentum
(d) conservation of energy

Q. $e_{+1}^0+e_{-1}^0⟶$ 2 $\gamma$
The above equation satisfies law of conservation of
a) Charge
b) energy
c) momentum

Q. Consider the following statements:
I. Kirchhoff’s junction law follows from the conservation of charge.
II. Kirchhoff’s loop law follows from the conservation of energy.
Which of the following is correct?

Q. Whai is mean by conservation in conservation of mass , conservation of energy , conservation of mechanical energy , conservation of angular momentum ,and conservation of linear momentum and please explain it in simple examples

Q. The energy and capacity of a charged parallel plate capacitor are $E$ and $C$ respectively. Now a dielectric slab of ${ϵ}_r=6$ is inserted in it, then energy and capacity becomes
(Assuming charge on plates remains constant)