Which of the following atomic numbers represent an element that is radioactive on the periodic table.

1. N=11
2.N=56
3.N=81
4.N=100

4=100

Explanation:

answer: option c. i.e. electric current flowing “downhill” from the negative electrode to the positive electrode in a battery

explanation:

the water analogy to the circuits define the pipes (water flows) to the electric current. now, we know that the electric current flows from the positive terminal to the circuit (as shown in the diagram attached).

hence, option c is the correct answer.

car stops. he keeps going = he has inertia