An electron moves from the positive to the negative terminal of a battery (9 V). How much potential energy did it gain or lose ?

A man with a mass of 80 kg falls 10 m . How much mechanical energy does he gain or lose ?

A storage battery is to be charged from a D.C. supply. Should the positive or the negative terminal of the battery be connected to the positive side of the line? Explain.

Conventional current flows from the negative terminal of the power source to the positive terminal.

Two capacitors of capacitance 1 muF and 2muF are charged to potential difference 20 V and 15 V as shown in figure. If now terminal B and C are connected together terminal A with positive of battery and D with negative terminal of battery then find out final charges on both the capacitor.

An electrode 'A' is connected to the positive terminal of a battery and electrode 'B' to the negative terminal. Give the names of the electrodes A & B.

State true (T) or false(F). Electrons flow from thr positive to the negative terminal in a circuit._______

(A): In a simple battery circuit, the point of the lowest potential is negative terminals of the battery (R): The current flows towards the point of the higher potential, as it does in such a circuit from the negative to the positive terminal.

The anode of a thermionic diode is connected to the negative terminal of a battery and the cathode to its positive terminal.