This is a Science question pls help give 15 coins for answer

Describe the path of the electric current through a circuit?

Orque can be calculated by multiplying the force (n) applied at 90? to the lever arm at a distance (m) from the pivot point (point of rotation), the compound si unit for the torque is n? m. if the force (at 90? to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?

What are the similarities & differences between a thermistor and a light dependent resistor in physics?